Removing shutdown event from Editor.ts

Script/AtomicEditor/editor/Editor.ts

@@ -274,7 +274,6 @@ class Editor extends Atomic.ScriptObject {
     // event handling
     handleExitRequested(data) {
         if (this.exitRequested) return;
-        this.sendEvent("IPCServerShutdown");
         this.exitRequested = true;
         this.closeAllResourceEditors();
     }