homescreen: Don't animate after unlock

KWin appears to freeze frames prior to locking, and so this animation looks very glitchy and jittery. It also causes problems if apps are already activated. Remove it for now so that it's smoother.

components/mobileshell/qml/homescreen/HomeScreen.qml

@@ -133,19 +133,6 @@ Item {
 
 //END API implementation
 
-    Connections {
-        target: MobileShellState.LockscreenDBusClient
-
-        function onLockscreenLocked() {
-            itemContainer.zoomOut();
-        }
-
-        function onLockscreenUnlocked() {
-            // run zoom animation after login
-            itemContainer.zoomIn();
-        }
-    }
-
     Component.onCompleted: {
         // determine the margins used
         evaluateMargins();