Bug 1057134 - Remove std::_Debug_message linking hack that's no longer needed. r=dmajor.

--HG--
extra : rebase_source : 53ee0cebc42269dcc228cfc5a18b0288e13716f3

mfbt/Atomics.h

@@ -43,13 +43,6 @@
 #    define MOZ_HAVE_CXX11_ATOMICS
 #  endif
 #elif defined(_MSC_VER)
-#  if defined(DEBUG)
-     /*
-      * Provide our own failure code since we're having trouble linking to
-      * std::_Debug_message (bug 982310).
-      */
-#    define _INVALID_MEMORY_ORDER MOZ_CRASH("Invalid memory order")
-#  endif
 #  define MOZ_HAVE_CXX11_ATOMICS
 #endif