Fixed copy paste fail, lock()-ing the EngineLock twice, instead of lock()-ing and unlock()-ing it.

Author: nicolasgramlich

src/org/andengine/examples/SpriteRemoveExample.java

@@ -105,7 +105,7 @@ public boolean onSceneTouchEvent(final Scene pScene, final TouchEvent pSceneTouc
 		this.mFaceToRemove.dispose();
 		this.mFaceToRemove = null;
 
-		engineLock.lock();
+		engineLock.unlock();
 		return true;
 	}