SWDEV-366831 - Revert "File reorg backward compatibility message changed to #error"

This reverts commit e9ebd8b072.

Reason for revert: Need app fixes first

Change-Id: I1fea9a2ca8d57ef79a4f407bbc0d906976292eb1


[ROCm/clr commit: 2801be2372]

projects/clr/hipamd/header_template.hpp.in

@@ -23,7 +23,7 @@
 #define @include_guard@
 
 #if defined(__GNUC__)
-#error "This file is deprecated. Use header files from HIP_PATH/include, where HIP_PATH corresponds to HIP install path"
+#warning "This file is deprecated. Use header files from HIP_PATH/include, where HIP_PATH corresponds to HIP install path"
 #else
 #pragma message("This file is deprecated. Use header files from HIP_PATH/include, where HIP_PATH corresponds to HIP install path")
 #endif