[mutter] display: Remove META_EVENT_ROUTE_COMPOSITOR_GRAB

[Marge Bot <marge-bot src gnome org>]

commit f73ad1d8d2b14118ec075e6631e97bbf863e1dca
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri May 27 19:36:45 2022 +0200

    display: Remove META_EVENT_ROUTE_COMPOSITOR_GRAB
    
    Nothing sets the value anymore since the port to ClutterGrab, and
    we just removed the last code references.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2436>

 src/core/display-private.h | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/src/core/display-private.h b/src/core/display-private.h
index 9725424e6f..37932095b8 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -86,10 +86,6 @@ typedef enum
    * goes to MetaWindow, but not to the actual client window. */
   META_EVENT_ROUTE_WINDOW_OP,
 
-  /* In a compositor grab operation. All events go to the
-   * compositor plugin. */
-  META_EVENT_ROUTE_COMPOSITOR_GRAB,
-
   /* A Wayland application has a popup open. All events go to
    * the Wayland application. */
   META_EVENT_ROUTE_WAYLAND_POPUP,