ref #803, do not use synchronize from another thread

* changed info component to use admit
* removed web service synchronize

src/blackgui/components/dbloadoverviewcomponent.h

@@ -69,9 +69,6 @@ namespace BlackGui
             //! Formatted count for entity
             static QString dbCountForEntity(BlackMisc::Network::CEntityFlags::Entity entity);
 
-            //! Synchronize caches
-            static void synchronizeCaches();
-
             //! Admit caches
             static void admitCaches();