Remove sk_memcpy32

src/opts/SkUtils_opts_arm.cpp

 /*
  * Copyright 2014 ARM Ltd.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkUtils.h"
 #include "SkUtilsArm.h"
 
@@ skipping 12 matching lines @@
 
 SkMemset32Proc SkMemset32GetPlatformProc() {
 #if SK_ARM_NEON_IS_ALWAYS
     return sk_memset32_neon;
 #elif SK_ARM_NEON_IS_DYNAMIC
     return sk_cpu_arm_has_neon() ? sk_memset32_neon : nullptr;
 #else
     return nullptr;
 #endif
 }
-
-SkMemcpy32Proc SkMemcpy32GetPlatformProc() {
-    return NULL;
-}