Remove locale.h

CMakeLists.txt

@@ -218,7 +218,7 @@ endfunction()
 
 # Define the fmt library, its includes and the needed defines.
 add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h
-                        format-inl.h locale.h os.h ostream.h printf.h ranges.h
+                        format-inl.h os.h ostream.h printf.h ranges.h std.h
                         xchar.h)
 if (FMT_MODULE)
   set(FMT_SOURCES src/fmt.cc)

include/fmt/locale.h

-#include "xchar.h"
-#warning fmt/locale.h is deprecated, include fmt/format.h or fmt/xchar.h instead