Fixes #899: Avoid change of user context

pkg/vtiger/modules/WSAPP/modules/WSAPP/WorkFlowHandlers/WSAPPAssignToTracker.php

@@ -19,9 +19,7 @@ class WSAPPAssignToTracker extends VTEventHandler{
 	}
 
 	function handleEvent($eventName, $entityData) {
-		$user = Users::getActiveAdminUser();
 		global $current_user;
-		$current_user = $user;
 		$db = PearDatabase::getInstance();
 		$moduleName = $entityData->getModuleName();