Remove synchronization for onTriggered method

Parallel triggering of multiple jobs for the same event should not
produce any issues as there is synchronization in onStarted method as
well.

But in same time onTriggered also is part of initial event processing.
That's why it's important to not have a lock here.

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/gerritnotifier/ToGerritRunListener.java

@@ -332,18 +332,13 @@ protected void cleanUpGerritCauses(GerritCause firstFound, Run build) {
      * @param project the project that will be built.
      * @param event   the event that caused the build to be scheduled.
      */
-    public synchronized void onTriggered(Job project, GerritTriggeredEvent event) {
+    public void onTriggered(Job project, GerritTriggeredEvent event) {
         //TODO stop builds for earlier patch-sets on same change.
         memory.triggered(event, project);
         if (event instanceof GerritEventLifecycle) {
             ((GerritEventLifecycle)event).fireProjectTriggered(project);
         }
-        //Logging
-        String name = null;
-        if (project != null) {
-            name = project.getName();
-        }
-        logger.info("Project [{}] triggered by Gerrit: [{}]", name, event);
+        logger.info("Project [{}] triggered by Gerrit: [{}]", project.getName(), event);
     }
 
     /**