[metacity] compositor: remove unused parameter from unmap_win

[Alberts Muktupāvels <muktupavels src gnome org>]

commit b35f50c14438bc2ce07969ee24231dc4494d446a
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Mar 3 22:00:11 2017 +0200

    compositor: remove unused parameter from unmap_win

 src/compositor/meta-compositor-xrender.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/compositor/meta-compositor-xrender.c b/src/compositor/meta-compositor-xrender.c
index f60aa44..ed718ee 100644
--- a/src/compositor/meta-compositor-xrender.c
+++ b/src/compositor/meta-compositor-xrender.c
@@ -2091,7 +2091,6 @@ map_win (MetaCompositorXRender *xrender,
 
 static void
 unmap_win (MetaCompositorXRender *xrender,
-           MetaScreen            *screen,
            Window                 id)
 {
   MetaCompWindow *cw = find_window (xrender, id);
@@ -2825,7 +2824,7 @@ process_unmap (MetaCompositorXRender *xrender,
 
   cw = find_window (xrender, event->window);
   if (cw)
-    unmap_win (xrender, cw->screen, event->window);
+    unmap_win (xrender, event->window);
 }
 
 static void