SWDEV-446123 - Revert "Match hipGetLastError behavior with CUDA using env var"

This reverts commit 5f477900a3.

Reason for revert: <INSERT REASONING HERE>

Change-Id: I11a456655393bcf4b82d749ce7259bc1b78d1424

rocclr/utils/debug.hpp

@@ -68,11 +68,6 @@ enum LogMask {
   LOG_ALWAYS    = -1      //!< (0xFFFFFFFF) Log always even mask flag is zero
 };
 
-// Flags to support backward incompatible changes before 7.0
-enum BreakingHipChange7 {
-  CHANGE_HIP_GET_LAST_ERROR = 1,              //!< (0x1)     HIP_GET_LAST_ERROR
-};
-
 //! \brief log file output
 extern FILE* outFile;