Remove all reference to SmsMirroring in Android Settings.

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2017 The Android Open Source Project

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

        android:width="24dp"

        android:height="24dp"

        android:viewportWidth="24.0"

        android:viewportHeight="24.0"

        android:tint="?android:attr/colorControlNormal">

    <path

        android:fillColor="#FF000000"

        android:pathData="M20,2C21.1,2 22,2.9 22,4L22,16C22,17.1 21.1,18 20,18L6,18L2,22L2.01,4C2.01,2.9 2.9,2 4,2L20,2ZM8,8L4,12L8,16L8,13L14,13L14,11L8,11L8,8ZM19.666,7.872L16.038,4.372L16.038,6.997L10,6.997L10,9L16.038,9L16.038,11.372L19.666,7.872Z"/>

</vector>

         and powering other device [CHAR LIMIT=NONE] -->

    <string name="usb_summary_MIDI_power">MIDI and supplying power</string>

    <!-- Settings item title for SMS Mirroring preference [CHAR LIMIT=35] -->

    <string name="sms_mirroring_pref">SMS Mirroring</string>

    <!-- Settings item title for background check prefs [CHAR LIMIT=35] -->

    <string name="background_check_pref">Background check</string>

        android:icon="@drawable/ic_android"

        android:order="-4"/>

    <Preference

        android:key="sms_mirroring"

        android:title="@string/sms_mirroring_pref"

        android:icon="@drawable/ic_sms_mirroring_24dp"

        android:summary="@string/summary_placeholder"

        android:order="-3"/>

    <SwitchPreference

        android:key="bluetooth_on_while_driving"

        android:title="@string/bluetooth_on_while_driving_pref"

        android:icon="@drawable/ic_android"

        android:order="-4"/>

    <Preference

        android:key="sms_mirroring"

        android:title="@string/sms_mirroring_pref"

        android:icon="@drawable/ic_sms_mirroring_24dp"

        android:summary="@string/summary_placeholder"

        android:order="-3"/>

    <Preference

        android:key="usb_mode"

        android:title="@string/usb_pref"

        lifecycle.addObserver(bluetoothPreferenceController);

        controllers.add(bluetoothPreferenceController);

        SmsMirroringFeatureProvider smsMirroringFeatureProvider =

                FeatureFactory.getFactory(context).getSmsMirroringFeatureProvider();

        AbstractPreferenceController smsMirroringController =

                smsMirroringFeatureProvider.getController(context);

        controllers.add(smsMirroringController);

        controllers.add(new BluetoothFilesPreferenceController(context));

        controllers.add(new BluetoothOnWhileDrivingPreferenceController(context));

        return controllers;

                    }

                    keys.add(BluetoothMasterSwitchPreferenceController.KEY_TOGGLE_BLUETOOTH);

                    SmsMirroringFeatureProvider smsMirroringFeatureProvider =

                            FeatureFactory.getFactory(context).getSmsMirroringFeatureProvider();

                    SmsMirroringPreferenceController smsMirroringController =

                            smsMirroringFeatureProvider.getController(context);

                    smsMirroringController.updateNonIndexableKeys(keys);

                    return keys;

                }

            };