Revert "renderer-native: Destroy monitor framebuffers when suspending"

The reverted commit seems to cause
https://bugzilla.gnome.org/show_bug.cgi?id=787240 for some reason. Lets
be safe and revert it for now, as the code freeze is just around the
corner.

This partly (it doesn't reintroduce a whitespace issue) reverts commit
dbc63430d8.

src/backends/native/meta-backend-native.c

@@ -682,14 +682,11 @@ meta_backend_native_pause (MetaBackendNative *native)
     meta_backend_get_monitor_manager (backend);
   MetaMonitorManagerKms *monitor_manager_kms =
     META_MONITOR_MANAGER_KMS (monitor_manager);
-  MetaRendererNative *renderer_native =
-    META_RENDERER_NATIVE (meta_backend_get_renderer (backend));
 
   clutter_evdev_release_devices ();
   clutter_egl_freeze_master_clock ();
 
   meta_monitor_manager_kms_pause (monitor_manager_kms);
-  meta_renderer_native_pause (renderer_native);
 }
 
 void meta_backend_native_resume (MetaBackendNative *native)