Revert "SWDEV-255979 - Enable __managed__ test for amd platform"

This reverts commit 99188c6f3b.

Change-Id: Ib1be007535dcfb24d9e4eddbdb706d3be4acc20c


[ROCm/clr commit: 59b98a3949]

projects/clr/hipamd/tests/src/runtimeApi/memory/hipManagedKeyword.cpp

@@ -2,8 +2,9 @@
 #include <math.h>
 #include "test_common.h"
 
+//Enable test when compiler support is available in mainline
 /* HIT_START
- * BUILD: %t %s ../../test_common.cpp
+ * BUILD: %t %s ../../test_common.cpp EXCLUDE_HIP_PLATFORM amd
  * HIT_END
  */
 #define N 1048576