Merge "Remove IMMS#mUserManager, which is unused"

    private final DisplayManagerInternal mDisplayManagerInternal;

    private final ArrayMap<String, List<InputMethodSubtype>> mAdditionalSubtypeMap =

            new ArrayMap<>();

    private final UserManager mUserManager;

    private final UserManagerInternal mUserManagerInternal;

    private final InputMethodMenuController mMenuController;

    @NonNull private final InputMethodBindingController mBindingController;

        mInputMethodDeviceConfigs = new InputMethodDeviceConfigs();

        mImeDisplayValidator = mWindowManagerInternal::getDisplayImePolicy;

        mDisplayManagerInternal = LocalServices.getService(DisplayManagerInternal.class);

        mUserManager = mContext.getSystemService(UserManager.class);

        mUserManagerInternal = LocalServices.getService(UserManagerInternal.class);

        mSlotIme = mContext.getString(com.android.internal.R.string.status_bar_ime);