Remove SettingsAppWidgetProvider and related resources

Bug: 111514449
Test: manual, RunSettingsRoboTests
Change-Id: I91e5662148a00a2aed12341304007f3b155e181c

AndroidManifest.xml

@@ -2615,23 +2615,6 @@
         <activity android:name=".notification.NotificationAccessConfirmationActivity"
                   android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert" />
 
-        <receiver android:name=".widget.SettingsAppWidgetProvider"
-                android:label="@string/gadget_title"
-                android:exported="false"
-                android:enabled="@bool/has_powercontrol_widget">
-            <intent-filter>
-                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
-                <action android:name="android.appwidget.action.APPWIDGET_ENABLED" />
-                <action android:name="android.appwidget.action.APPWIDGET_DISABLED" />
-                <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
-                <action android:name="android.net.conn.BACKGROUND_DATA_SETTING_CHANGED" />
-                <action android:name="android.bluetooth.adapter.action.STATE_CHANGED" />
-                <action android:name="android.location.MODE_CHANGED" />
-                <action android:name="com.android.sync.SYNC_CONN_STATUS_CHANGED" />
-            </intent-filter>
-            <meta-data android:name="android.appwidget.provider" android:resource="@xml/appwidget_info" />
-        </receiver>
-
         <receiver android:name="com.android.settingslib.bluetooth.BluetoothDiscoverableTimeoutReceiver">
             <intent-filter>
                 <action android:name="android.bluetooth.intent.DISCOVERABLE_TIMEOUT" />