[LogProfiler] Removed GcRoot events logging from start

GcRoots should only be reported/captured during heapshot. We already set callback when heapshot collection starts and unset it when heapshot is finished. Which means after 1st heapshot is taken we don't log them outside heapshot. Hence we shouldn't be logging them from start...

Author: DavidKarlas

mono/profiler/log.c

@@ -4728,9 +4728,6 @@ mono_profiler_init_log (const char *desc)
 	if (ENABLED (PROFLOG_GC_MOVE_EVENTS))
 		mono_profiler_set_gc_moves_callback (handle, gc_moves);
 
-	if (ENABLED (PROFLOG_GC_ROOT_EVENTS))
-		mono_profiler_set_gc_roots_callback (handle, gc_roots);
-
 	if (ENABLED (PROFLOG_GC_HANDLE_EVENTS)) {
 		mono_profiler_set_gc_handle_created_callback (handle, gc_handle_created);
 		mono_profiler_set_gc_handle_deleted_callback (handle, gc_handle_deleted);