cleanup: osx_common: remove unused functions

Remove functions that aren't called anymore:

 *  `osx_foreground_hack` was replaced by the NSApplication's
    activateIgnoringOtherApps: in cocoa_common.
 *  Aspect ratio functions were not called by the "new" cocoa backend,
    since the corresponding menu item was deleted.

libvo/osx_common.c

@@ -113,53 +113,3 @@ int convert_key(unsigned key, unsigned charcode)
         return mpkey;
     return charcode;
 }
-
-static int our_aspect_change;
-static float old_movie_aspect;
-
-/**
- * Sends MPlayer a command to change aspect to the requested value.
- * @param new_aspect desired new aspect, < 0 means restore original.
- */
-void change_movie_aspect(struct vo *vo, float new_aspect)
-{
-    char cmd_str[64];
-    if (new_aspect < 0)
-        new_aspect = old_movie_aspect;
-    our_aspect_change = 1;
-    snprintf(cmd_str, sizeof(cmd_str), "switch_ratio %f", new_aspect);
-    mp_input_queue_cmd(vo->input_ctx, mp_input_parse_cmd(cmd_str));
-}
-
-/**
- * Call in config to save the original movie aspect.
- * This will ignore config calls caused by change_movie_aspect.
- */
-void config_movie_aspect(float config_aspect)
-{
-    if (!our_aspect_change)
-        old_movie_aspect = config_aspect;
-    our_aspect_change = 0;
-}
-
-/** This chunk of code is heavily based off SDL_macosx.m from SDL.
- *  The CPSEnableForegroundOperation that was here before is private
- *  and should not be used.
- *  Replaced by a call to the 10.3+ TransformProcessType.
- */
-void osx_foreground_hack(void)
-{
-#if !defined (CONFIG_MACOSX_FINDER) || !defined (CONFIG_SDL)
-    ProcessSerialNumber myProc, frProc;
-    Boolean sameProc;
-
-    if (GetFrontProcess(&frProc)   == noErr &&
-        GetCurrentProcess(&myProc) == noErr) {
-        if (SameProcess(&frProc, &myProc, &sameProc) == noErr && !sameProc) {
-            TransformProcessType(&myProc,
-                                 kProcessTransformToForegroundApplication);
-        }
-        SetFrontProcess(&myProc);
-    }
-#endif
-}

libvo/osx_common.h

@@ -22,8 +22,5 @@
 struct vo;
 
 int convert_key(unsigned key, unsigned charcode);
-void change_movie_aspect(struct vo *vo, float new_aspect);
-void config_movie_aspect(float config_aspect);
-void osx_foreground_hack(void);
 
 #endif /* MPLAYER_OSX_COMMON_H */