Fix a remove*Listener call that doesn't remove

Fix a remove*Listener call that doesn't remove the listener.

Test: Build only
Change-Id: I67b57e8df8a6d39622999634cefdc267fc07ecae

services/core/java/com/android/server/location/util/SettingsHelper.java

@@ -171,7 +171,7 @@ public class SettingsHelper {
      * Remove a listener for changes to the location enabled setting.
      */
     public void removeOnLocationEnabledChangedListener(UserSettingChangedListener listener) {
-        mLocationMode.addListener(listener);
+        mLocationMode.removeListener(listener);
     }
 
     /**