LaunchBox: remove redundant Locking. Thanks Stippi!

src/apps/launchbox/MainWindow.cpp

@@ -91,7 +91,7 @@ MainWindow::QuitRequested()
 			padWindowCount++;
 	}
 	bool canClose = true;
-	if (Lock()) {
+	
 	if (padWindowCount == 1) {
 		be_app->PostMessage(B_QUIT_REQUESTED);
 		canClose = false;
@@ -104,8 +104,6 @@ MainWindow::QuitRequested()
 		if (alert->Go() == 1)
 			canClose = false;
 	}
-		Unlock();
-	}
 	return canClose;
 }