Remove usage of valid window region in NHWC CPU kernels - Part2

Remove set_valid_region methods from all NHWC CPU ML functions /
operators / kernels

Resolves COMPMID-4152 (2/2)

Change-Id: If9725e9c5b0213b87db96675e81b7fb724970b98
Signed-off-by: SiCongLi <sicong.li@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5203
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/NEBitwiseAndKernel.cpp b/src/core/NEON/kernels/NEBitwiseAndKernel.cpp
index 4f4de70..677c5cd 100644
--- a/src/core/NEON/kernels/NEBitwiseAndKernel.cpp
+++ b/src/core/NEON/kernels/NEBitwiseAndKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020 Arm Limited.
+ * Copyright (c) 2016-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -91,11 +91,6 @@
                               AccessWindowHorizontal(input2->info(), 0, num_elems_processed_per_iteration),
                               output_access);
 
-    const ValidRegion valid_region = intersect_valid_regions(input1->info()->valid_region(),
-                                                             input2->info()->valid_region());
-
-    output_access.set_valid_region(win, valid_region);
-
     INEKernel::configure(win);
 }