rename RemoveIdleSource to SuspendIdleCallback

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43879 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/evtloop.cpp

@@ -103,7 +103,7 @@ bool wxEventLoop::Pending() const
     {
         // We need to remove idle callbacks or gtk_events_pending will
         // never return false.
-        wxTheApp->RemoveIdleSource();
+        wxTheApp->SuspendIdleCallback();
     }
 
     return gtk_events_pending();