[mutter] Revert "MetaWindowActor: don't start any effect when no compositor is available"

[Marco Trevisan <marcotrevi src gnome org>]

commit 0ebea2be9c1f7b6454586e3df9e9145c59c2f2d7
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Fri Oct 20 03:25:31 2017 -0500

    Revert "MetaWindowActor: don't start any effect when no compositor is available"
    
    This reverts commit 35fcf4a4ae5e4c7259111def96aa19a2d5081fc4.

 src/compositor/meta-window-actor.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/src/compositor/meta-window-actor.c b/src/compositor/meta-window-actor.c
index 83f6570..de506aa 100644
--- a/src/compositor/meta-window-actor.c
+++ b/src/compositor/meta-window-actor.c
@@ -1076,9 +1076,6 @@ start_simple_effect (MetaWindowActor  *self,
   gint *counter = NULL;
   gboolean use_freeze_thaw = FALSE;
 
-  if (!compositor->plugin_mgr)
-    return FALSE;
-
   switch (event)
   {
   case META_PLUGIN_NONE: