The descriptions for keybindings shared with Metacity are now
duplicated in Mutter, so only use the latter to avoid duplicate
entries in System Settings.
https://bugzilla.gnome.org/show_bug.cgi?id=687672
#define OVERRIDES_SCHEMA "org.gnome.shell.overrides"
#define WM_NAME "GNOME Shell"
-#define GNOME_WM_KEYBINDINGS "Metacity,Mutter,GNOME Shell"
+#define GNOME_WM_KEYBINDINGS "Mutter,GNOME Shell"
static gboolean is_gdm_mode = FALSE;
static char *session_mode = NULL;