LineageStatusBarItemHolder: Implement receivers removal methods

/**

 * Copyright (C) 2018 The LineageOS project

 * Copyright (C) 2018-2026 The LineageOS project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

        mVisibilityReceivers.add(visibilityReceiver);

        visibilityReceiver.onVisibilityChanged(mItemHolderIsVisible);

    }

    public void removeDarkReceiver(LineageStatusBarItem.DarkReceiver darkReceiver) {

        mDarkReceivers.remove(darkReceiver);

    }

    public void removeVisibilityReceiver(

            LineageStatusBarItem.VisibilityReceiver visibilityReceiver) {

        mVisibilityReceivers.remove(visibilityReceiver);

    }

}