ui/gtk: remove unused variable ignore_keys

Since the removal of GTK2 code in commit 89d85cde the code
around ignore_keys is unused. See commit 1a01716a "gtk: Avoid
accel key leakage into guest on console switch" why it was only
needed for GTK2.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-5-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

ui/gtk.c

@@ -168,8 +168,6 @@ struct GtkDisplayState {
 
     bool external_pause_update;
 
-    bool ignore_keys;
-
     DisplayOptions *opts;
 };
 
@@ -1095,14 +1093,8 @@ static gboolean gd_text_key_down(GtkWidget *widget,
 static gboolean gd_key_event(GtkWidget *widget, GdkEventKey *key, void *opaque)
 {
     VirtualConsole *vc = opaque;
-    GtkDisplayState *s = vc->s;
     int qcode;
 
-    if (s->ignore_keys) {
-        s->ignore_keys = (key->type == GDK_KEY_PRESS);
-        return TRUE;
-    }
-
 #ifdef WIN32
     /* on windows, we ought to ignore the reserved key event? */
     if (key->hardware_keycode == 0xff)
@@ -1204,7 +1196,6 @@ static void gd_menu_switch_vc(GtkMenuItem *item, void *opaque)
         gtk_notebook_set_current_page(nb, page);
         gtk_widget_grab_focus(vc->focus);
     }
-    s->ignore_keys = false;
 }
 
 static void gd_accel_switch_vc(void *opaque)