[metacity] display: remove meta_display_screen_for_root

[Alberts Muktupāvels <muktupavels src gnome org>]

commit c79e69bb44927978003a8696800c3fd5ba9b32d7
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Jul 4 12:13:16 2017 +0300

    display: remove meta_display_screen_for_root

 src/core/display.c    |   12 +-----------
 src/include/display.h |    2 --
 2 files changed, 1 insertions(+), 13 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index ca1002b..7044557 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -876,16 +876,6 @@ meta_display_close (MetaDisplay *display,
   meta_quit ();
 }
 
-MetaScreen*
-meta_display_screen_for_root (MetaDisplay *display,
-                              Window       xroot)
-{
-  if (display->screen->xroot == xroot)
-    return display->screen;
-
-  return NULL;
-}
-
 /* Grab/ungrab routines taken from fvwm */
 void
 meta_display_grab (MetaDisplay *display)
@@ -1548,7 +1538,7 @@ handle_window_focus_event (MetaDisplay *display,
     }
   else if (meta_display_xwindow_is_a_no_focus_window (display, event->xany.window))
     window_type = "no_focus_window";
-  else if (meta_display_screen_for_root (display, event->xany.window))
+  else if (event->xany.window == display->screen->xroot)
     window_type = "root window";
   else
     window_type = "unknown window";
diff --git a/src/include/display.h b/src/include/display.h
index 192bd27..b3951d0 100644
--- a/src/include/display.h
+++ b/src/include/display.h
@@ -32,8 +32,6 @@ MetaScreen *meta_display_get_screen (MetaDisplay *display);
 
 gboolean meta_display_has_shape (MetaDisplay *display);
 
-MetaScreen *meta_display_screen_for_root (MetaDisplay *display,
-                                          Window       xroot);
 MetaWindow *meta_display_get_focus_window (MetaDisplay *display);
 
 int meta_display_get_damage_event_base (MetaDisplay *display);