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/arm_compute/core/CL/kernels/CLDirectConvolutionLayerKernel.h b/arm_compute/core/CL/kernels/CLDirectConvolutionLayerKernel.h
index eb1bf58..bd37e35 100644
--- a/arm_compute/core/CL/kernels/CLDirectConvolutionLayerKernel.h
+++ b/arm_compute/core/CL/kernels/CLDirectConvolutionLayerKernel.h
@@ -56,7 +56,7 @@
      *        5x5 convolution with stride_x = 1/2, stride_y = 1/2
      *
      * @param[in]  input     The input tensor to convolve. 3 lower dimensions represent a single input [width, height, IFM],
-     *                       while every optional dimension from 4 and above represent a batch of inputs. Data types supported: QASYMM8/QS8/QS16/F16/F32.
+     *                       while every optional dimension from 4 and above represent a batch of inputs. Data types supported: QASYMM8/F16/F32.
      * @param[in]  weights   Weights tensor. Weights are 4D tensor with dimensions [kernel_x, kernel_y, IFM, OFM].
      *                       The 3rd dimension must be the same as the input's volume 3rd dimension.
      *                       Data type supported:Same as @p input.
@@ -70,7 +70,7 @@
     /** Static function to check if given info will lead to a valid configuration of @ref CLDirectConvolutionLayerKernel
      *
      * @param[in] input     The input tensor to convolve. 3 lower dimensions represent a single input [width, height, IFM],
-     *                      while every optional dimension from 4 and above represent a batch of inputs. Data types supported: QS8/QASYMM8/QS16/F16/F32.
+     *                      while every optional dimension from 4 and above represent a batch of inputs. Data types supported: QASYMM8/F16/F32.
      * @param[in] weights   Weights tensor. Weights are 4D tensor with dimensions [kernel_x, kernel_y, IFM, OFM].
      *                      The 3rd dimension must be the same as the input's volume 3rd dimension.
      *                      Data type supported:Same as @p input.