Remove dead code

Test: try to search 'gentle'
Fixes: 135640138
Change-Id: If03703e59f77206da08fc80e88bb986f821c18fe

src/com/android/settings/notification/SilentStatusBarPreferenceController.java

@@ -1,77 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settings.notification;
-
-import static android.provider.Settings.Secure.NOTIFICATION_NEW_INTERRUPTION_MODEL;
-
-import android.content.Context;
-import android.os.UserHandle;
-import android.provider.Settings;
-
-import com.android.settings.core.TogglePreferenceController;
-
-import com.google.common.annotations.VisibleForTesting;
-
-public class SilentStatusBarPreferenceController extends TogglePreferenceController {
-
-    private static final String KEY = "silent_icons";
-    private static final int MY_USER_ID = UserHandle.myUserId();
-    private NotificationBackend mBackend;
-    private Listener mListener;
-
-    public SilentStatusBarPreferenceController(Context context) {
-        super(context, KEY);
-        mBackend = new NotificationBackend();
-    }
-
-    @VisibleForTesting
-    void setBackend(NotificationBackend backend) {
-        mBackend = backend;
-    }
-
-    @Override
-    public boolean isChecked() {
-        return !mBackend.shouldHideSilentStatusBarIcons(mContext);
-    }
-
-    @Override
-    public boolean setChecked(boolean isChecked) {
-        mBackend.setHideSilentStatusIcons(!isChecked);
-        if (mListener != null) {
-            mListener.onChange(isChecked);
-        }
-        return true;
-    }
-
-    @Override
-    public int getAvailabilityStatus() {
-        return Settings.Secure.getInt(
-                mContext.getContentResolver(), NOTIFICATION_NEW_INTERRUPTION_MODEL, 1) != 0
-                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
-    }
-
-    public void setListener(Listener listener) {
-        mListener = listener;
-    }
-
-    interface Listener {
-        void onChange(boolean shown);
-    }
-
-}
-
-