Cleanup format.h

include/fmt/format-inl.h

@@ -26,6 +26,10 @@
 #  include <locale>
 #endif
 
+#ifndef FMT_FUNC
+#  define FMT_FUNC
+#endif
+
 FMT_BEGIN_NAMESPACE
 namespace detail {
 

include/fmt/format.h

@@ -4310,8 +4310,6 @@ FMT_END_NAMESPACE
 #ifdef FMT_HEADER_ONLY
 #  define FMT_FUNC inline
 #  include "format-inl.h"
-#else
-#  define FMT_FUNC
 #endif
 
 // Restore _LIBCPP_REMOVE_TRANSITIVE_INCLUDES.