[mutter] core/core: Remove unused function

[Florian Müllner <fmuellner src gnome org>]

commit 877ecc1bb418ba244e84f1bfac3045c6a4e4f779
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Aug 29 20:42:49 2019 +0300

    core/core: Remove unused function
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/854

 src/core/core.c | 6 ------
 src/core/core.h | 1 -
 2 files changed, 7 deletions(-)
---
diff --git a/src/core/core.c b/src/core/core.c
index f02c35083..5c2b8e428 100644
--- a/src/core/core.c
+++ b/src/core/core.c
@@ -277,12 +277,6 @@ meta_core_set_screen_cursor (Display *xdisplay,
   meta_frame_set_screen_cursor (window->frame, cursor);
 }
 
-void
-meta_invalidate_default_icons (void)
-{
-  /* XXX: Actually invalidate the icons when they're used. */
-}
-
 void
 meta_retheme_all (void)
 {
diff --git a/src/core/core.h b/src/core/core.h
index dc343d0c4..47194da37 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -77,7 +77,6 @@ void       meta_core_set_screen_cursor (Display *xdisplay,
                                         Window   frame_on_screen,
                                         MetaCursor cursor);
 
-void meta_invalidate_default_icons (void);
 void meta_retheme_all (void);
 
 #endif