SWDEV-351980 - Enable profiling for commands reporting activities

Profiling should be enabled for any command reporting activities as the
activity record captures the profilingInfo's start and end timestamps.

Since IS_PROFILER_ON is only used to determine whether API tracing is
enabled, there is no need to expose it globally, it should be a property
of the activity_prof::CallbacksTable.

Change-Id: I44a0d19ed2862606cfbc9a98c1a07a336ab7e26c

rocclr/utils/flags.cpp

@@ -82,7 +82,6 @@ namespace amd {
 #endif  // __APPLE__
 
 bool IS_HIP = false;
-std::atomic_bool IS_PROFILER_ON(false);
 
 #if !defined(_WIN32) && defined(WITH_PAL_DEVICE)
 bool IS_LEGACY = true;