COMPMID-970 : Remove QS8 / QS16 support

Removed fixed point related code.

Change-Id: I487acf138dace3b0450e0d72ca7071eaec254566
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/137678
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/src/runtime/NEON/functions/NEDepthwiseConvolutionLayer.cpp b/src/runtime/NEON/functions/NEDepthwiseConvolutionLayer.cpp
index 83c3e21..1d65dde 100644
--- a/src/runtime/NEON/functions/NEDepthwiseConvolutionLayer.cpp
+++ b/src/runtime/NEON/functions/NEDepthwiseConvolutionLayer.cpp
@@ -88,7 +88,7 @@
     }
     else
     {
-        // Allocate the intermediate accumulator tensor in case of fixed point input
+        // Allocate the intermediate accumulator tensor in case of quantized input
         if(_is_quantized)
         {
             _accumulator.allocator()->init(TensorInfo(output->info()->tensor_shape(), 1, DataType::S32));