Revert "Explicitly enable PRIu64 by defining __STDC_FORMAT_MACROS if it isn't"

This reverts commit d1b5d3b0e885ef057643fcea99bff8b6cce04b93.

llvm-svn: 198656

compiler-rt/lib/profile/PGOProfiling.c

@@ -10,12 +10,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-// Explicitly request that the format macros like PRIu64 be enabled if they
-// haven't already been enabled.
-#ifndef __STDC_FORMAT_MACROS
-#define __STDC_FORMAT_MACROS 1
-#endif
-
 #if !defined(__APPLE__)
 #include <inttypes.h>
 #endif