hotfix: commenting out raise_strict_warning() that has bug

Test Plan:
make

DiffCamp Revision: 122497
Reviewed By: andrewparoski
CC: hphp-diffs@lists, macvicar, dwei, andrewparoski, myang
Revert Plan:
OK

src/runtime/base/time/timezone.cpp

@@ -122,7 +122,7 @@ String TimeZone::CurrentName() {
   }
 
   /* Try to guess timezone from system information */
-  raise_strict_warning(s_guessed_timezone.m_warning);
+  //raise_strict_warning(s_guessed_timezone.m_warning);
   return String(s_guessed_timezone.m_tzid);
 }