diff --git a/src/backends/reference/RefLayerSupport.hpp b/src/backends/reference/RefLayerSupport.hpp
index 40bca7f..0da5998 100644
--- a/src/backends/reference/RefLayerSupport.hpp
+++ b/src/backends/reference/RefLayerSupport.hpp
@@ -169,160 +169,4 @@
                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
 };
 
-bool IsActivationSupportedRef(const TensorInfo& input,
-                              const TensorInfo& output,
-                              const ActivationDescriptor& descriptor,
-                              Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsAdditionSupportedRef(const TensorInfo& input0,
-                            const TensorInfo& input1,
-                            const TensorInfo& output,
-                            Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsBatchNormalizationSupportedRef(const TensorInfo& input,
-                                      const TensorInfo& output,
-                                      const TensorInfo& mean,
-                                      const TensorInfo& var,
-                                      const TensorInfo& beta,
-                                      const TensorInfo& gamma,
-                                      const BatchNormalizationDescriptor& descriptor,
-                                      Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsConstantSupportedRef(const TensorInfo& output,
-                            Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsConvolution2dSupportedRef(const TensorInfo& input,
-                                 const TensorInfo& output,
-                                 const Convolution2dDescriptor& descriptor,
-                                 const TensorInfo& weights,
-                                 const Optional<TensorInfo>& biases,
-                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsDepthwiseConvolutionSupportedRef(const TensorInfo& input,
-                                        const TensorInfo& output,
-                                        const DepthwiseConvolution2dDescriptor& descriptor,
-                                        const TensorInfo& weights,
-                                        const Optional<TensorInfo>& biases,
-                                        Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsDivisionSupportedRef(const TensorInfo& input0,
-                            const TensorInfo& input1,
-                            const TensorInfo& output,
-                            Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsSubtractionSupportedRef(const TensorInfo& input0,
-                               const TensorInfo& input1,
-                               const TensorInfo& output,
-                               Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsFullyConnectedSupportedRef(const TensorInfo& input,
-                                  const TensorInfo& output,
-                                  const TensorInfo& weights,
-                                  const TensorInfo& biases,
-                                  const FullyConnectedDescriptor& descriptor,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsInputSupportedRef(const TensorInfo& input,
-                         Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsL2NormalizationSupportedRef(const TensorInfo& input,
-                                   const TensorInfo& output,
-                                   const L2NormalizationDescriptor& descriptor,
-                                   Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsLstmSupportedRef(const TensorInfo& input,
-                        const TensorInfo& outputStateIn,
-                        const TensorInfo& cellStateIn,
-                        const TensorInfo& scratchBuffer,
-                        const TensorInfo& outputStateOut,
-                        const TensorInfo& cellStateOut,
-                        const TensorInfo& output,
-                        const LstmDescriptor& descriptor,
-                        const TensorInfo& inputToForgetWeights,
-                        const TensorInfo& inputToCellWeights,
-                        const TensorInfo& inputToOutputWeights,
-                        const TensorInfo& recurrentToForgetWeights,
-                        const TensorInfo& recurrentToCellWeights,
-                        const TensorInfo& recurrentToOutputWeights,
-                        const TensorInfo& forgetGateBias,
-                        const TensorInfo& cellBias,
-                        const TensorInfo& outputGateBias,
-                        const TensorInfo* inputToInputWeights,
-                        const TensorInfo* recurrentToInputWeights,
-                        const TensorInfo* cellToInputWeights,
-                        const TensorInfo* inputGateBias,
-                        const TensorInfo* projectionWeights,
-                        const TensorInfo* projectionBias,
-                        const TensorInfo* cellToForgetWeights,
-                        const TensorInfo* cellToOutputWeights,
-                        Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsMergerSupportedRef(const std::vector<const TensorInfo*> inputs,
-                          const OriginsDescriptor& descriptor,
-                          Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsMultiplicationSupportedRef(const TensorInfo& input0,
-                                  const TensorInfo& input1,
-                                  const TensorInfo& output,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsNormalizationSupportedRef(const TensorInfo& input,
-                                 const TensorInfo& output,
-                                 const NormalizationDescriptor& descriptor,
-                                 Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsOutputSupportedRef(const TensorInfo& output,
-                          Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsPermuteSupportedRef(const TensorInfo& input,
-                           const TensorInfo& output,
-                           const PermuteDescriptor& descriptor,
-                           Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsPooling2dSupportedRef(const TensorInfo& input,
-                             const TensorInfo& output,
-                             const Pooling2dDescriptor& descriptor,
-                             Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsResizeBilinearSupportedRef(const TensorInfo& input,
-                                  Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsSoftmaxSupportedRef(const TensorInfo& input,
-                           const TensorInfo& output,
-                           const SoftmaxDescriptor& descriptor,
-                           Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsSplitterSupportedRef(const TensorInfo& input,
-                            const ViewsDescriptor& descriptor,
-                            Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsFakeQuantizationSupportedRef(const TensorInfo& input,
-                                    const FakeQuantizationDescriptor& descriptor,
-                                    Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsReshapeSupportedRef(const TensorInfo& input,
-                           Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsFloorSupportedRef(const TensorInfo& input,
-                         const TensorInfo& output,
-                         Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsConvertFp16ToFp32SupportedRef(const TensorInfo& input,
-                                     const TensorInfo& output,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsConvertFp32ToFp16SupportedRef(const TensorInfo& input,
-                                     const TensorInfo& output,
-                                     Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsMeanSupportedRef(const TensorInfo& input,
-                        const TensorInfo& output,
-                        const MeanDescriptor& descriptor,
-                        Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-bool IsPadSupportedRef(const TensorInfo& input,
-                       const TensorInfo& output,
-                       const PadDescriptor& descriptor,
-                       Optional<std::string&> reasonIfUnsupported = EmptyOptional());
-
-}
+} // namespace armnn