Port Bug 508905 to comm-central - /Zc:wchar_t- is no longer required - to fix windows bustage. r=bustage-fix

configure.in

@@ -585,18 +585,15 @@ case "$target" in
             fi
 
             _CC_SUITE=8
-            CXXFLAGS="$CXXFLAGS -Zc:wchar_t-"
             AC_DEFINE(_CRT_SECURE_NO_DEPRECATE)
             AC_DEFINE(_CRT_NONSTDC_NO_DEPRECATE)
         elif test "$_CC_MAJOR_VERSION" = "15"; then
             _CC_SUITE=9
-            CXXFLAGS="$CXXFLAGS -Zc:wchar_t-"
             LDFLAGS="$LDFLAGS -MANIFESTUAC:NO"
             AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
             AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
         elif test "$_CC_MAJOR_VERSION" = "16"; then
             _CC_SUITE=10
-            CXXFLAGS="$CXXFLAGS -Zc:wchar_t-"
             LDFLAGS="$LDFLAGS -MANIFESTUAC:NO"
             AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
             AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)