threadlistlayout: do not check toolbar on showPosts

showPosts can be called when the view isn't in focus, so it's annoying
for the in focus view.

Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java

@@ -232,7 +232,6 @@ public class ThreadListLayout extends FrameLayout implements ReplyLayout.ReplyLa
             party();
         }
 
-        showToolbarIfNeeded();
         setFastScroll(true);
 
         postAdapter.setThread(thread, filter);