COMPMID-1995: Fix clang-tidy warnings

- Remove VirtualCall checks
- Fix some unused variables errors
- Use std::array insted of C style arrays
- Various fixes

Change-Id: Ife6170b7102de42b8f04e298dcf8476bf90779f0
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1049
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
diff --git a/src/core/NEON/kernels/NEChannelExtractKernel.cpp b/src/core/NEON/kernels/NEChannelExtractKernel.cpp
index 98b2f28..61e1304 100644
--- a/src/core/NEON/kernels/NEChannelExtractKernel.cpp
+++ b/src/core/NEON/kernels/NEChannelExtractKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018 ARM Limited.
+ * Copyright (c) 2016-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -192,7 +192,7 @@
     Iterator in(_input, win);
     Iterator out(_output, win);
 
-    execute_window_loop(win, [&](const Coordinates & id)
+    execute_window_loop(win, [&](const Coordinates &)
     {
         const auto in_ptr  = static_cast<uint8_t *>(in.ptr());
         const auto out_ptr = static_cast<uint8_t *>(out.ptr());
@@ -207,7 +207,7 @@
     Iterator in(_input, win);
     Iterator out(_output, win);
 
-    execute_window_loop(win, [&](const Coordinates & id)
+    execute_window_loop(win, [&](const Coordinates &)
     {
         const auto in_ptr  = static_cast<uint8_t *>(in.ptr());
         const auto out_ptr = static_cast<uint8_t *>(out.ptr());
@@ -222,7 +222,7 @@
     Iterator in(_input, win);
     Iterator out(_output, win);
 
-    execute_window_loop(win, [&](const Coordinates & id)
+    execute_window_loop(win, [&](const Coordinates &)
     {
         const auto in_ptr  = static_cast<uint8_t *>(in.ptr());
         const auto out_ptr = static_cast<uint8_t *>(out.ptr());
@@ -242,7 +242,7 @@
     Iterator in(_input, win);
     Iterator out(_output, win_out);
 
-    execute_window_loop(win, [&](const Coordinates & id)
+    execute_window_loop(win, [&](const Coordinates &)
     {
         const auto in_ptr  = static_cast<uint8_t *>(in.ptr());
         const auto out_ptr = static_cast<uint8_t *>(out.ptr());