IVGCVSW-3129 Image pre-processing fix for TFLite

 * Resized images for quantized models are now statically cast to uint8
   instead of quantized

 * Removed optional quantization parameters from ImagePreprocessor
   constructor

 * Changed mean and scale for TFLite models

Signed-off-by: FinnWilliamsArm <Finn.Williams@arm.com>
Change-Id: Id5ffdf77f3614d10c417e769bd8ffc4a4c07308b
diff --git a/tests/TfLiteMobilenetQuantized-Armnn/TfLiteMobilenetQuantized-Armnn.cpp b/tests/TfLiteMobilenetQuantized-Armnn/TfLiteMobilenetQuantized-Armnn.cpp
index 220964d..1b411f9 100644
--- a/tests/TfLiteMobilenetQuantized-Armnn/TfLiteMobilenetQuantized-Armnn.cpp
+++ b/tests/TfLiteMobilenetQuantized-Armnn/TfLiteMobilenetQuantized-Armnn.cpp
@@ -108,14 +108,12 @@
                      [&imageSet](const char* dataDir, const ModelType & model) {
                          // we need to get the input quantization parameters from
                          // the parsed model
-                         auto inputBinding = model.GetInputBindingInfo();
                          return DatabaseType(
                              dataDir,
                              224,
                              224,
                              imageSet,
-                             inputBinding.second.GetQuantizationScale(),
-                             inputBinding.second.GetQuantizationOffset());
+                             1);
                      },
                      &inputTensorShape);
     }