[mutter] clutter: Remove left-over xinput debug code

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

commit fbb586283ffa6c4e15e46bdf84f3e8b5201ed74f
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue Sep 14 16:08:33 2021 +0200

    clutter: Remove left-over xinput debug code
    
    The only thing that happened was a static boolean getting set but never
    read.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2002>

 src/backends/x11/meta-clutter-backend-x11.c | 14 --------------
 1 file changed, 14 deletions(-)
---
diff --git a/src/backends/x11/meta-clutter-backend-x11.c b/src/backends/x11/meta-clutter-backend-x11.c
index d949878791..f296bf343e 100644
--- a/src/backends/x11/meta-clutter-backend-x11.c
+++ b/src/backends/x11/meta-clutter-backend-x11.c
@@ -71,7 +71,6 @@ static const gchar *atom_names[] = {
 #define N_ATOM_NAMES G_N_ELEMENTS (atom_names)
 
 /* various flags corresponding to pre init setup calls */
-static gboolean clutter_enable_xinput = TRUE;
 static gboolean clutter_enable_stereo = FALSE;
 static Display  *_foreign_dpy = NULL;
 
@@ -125,13 +124,6 @@ meta_clutter_backend_x11_pre_parse (ClutterBackend  *backend,
       env_string = NULL;
     }
 
-  env_string = g_getenv ("CLUTTER_DISABLE_XINPUT");
-  if (env_string)
-    {
-      clutter_enable_xinput = FALSE;
-      env_string = NULL;
-    }
-
   return TRUE;
 }
 
@@ -247,12 +239,6 @@ static const GOptionEntry entries[] =
     G_OPTION_ARG_NONE, &clutter_synchronise,
     N_("Make X calls synchronous"), NULL
   },
-  {
-    "disable-xinput", 0,
-    G_OPTION_FLAG_REVERSE,
-    G_OPTION_ARG_NONE, &clutter_enable_xinput,
-    N_("Disable XInput support"), NULL
-  },
   { NULL }
 };