IVGCVSW-3025: Refactor reference Convolution2d workload

 * Refactored RefConvolution2dWorkload to support all DataTypes through Encoders and Decoders.
 * Added Convolute function to ConvImpl that uses Encoders and Decoders to support all DataTypes.
 * Deleted RefConvolution2dFloat32Workload and RefConvolution2dUint8Workload.

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ic5ef0f499d08b948fa65fdee54b5f681fd0b1c05
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 1d635aa..3146fca 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -33,8 +33,7 @@
         workloads/RefConstantWorkload.cpp \
         workloads/RefConvertFp16ToFp32Workload.cpp \
         workloads/RefConvertFp32ToFp16Workload.cpp \
-        workloads/RefConvolution2dFloat32Workload.cpp \
-        workloads/RefConvolution2dUint8Workload.cpp \
+        workloads/RefConvolution2dWorkload.cpp \
         workloads/RefDebugWorkload.cpp \
         workloads/RefDepthwiseConvolution2dFloat32Workload.cpp \
         workloads/RefDepthwiseConvolution2dUint8Workload.cpp \