HeadsetTest: Delete un-necessary reflection

import org.mockito.junit.MockitoJUnit;

import org.mockito.junit.MockitoRule;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashMap;

    @Before

    public void setUp() throws Exception {

        TestUtils.setAdapterService(mAdapterService);

        // We cannot mock HeadsetObjectsFactory.getInstance() with Mockito.

        // Hence we need to use reflection to call a private method to

        // initialize properly the HeadsetObjectsFactory.sInstance field.

        Method method =

                HeadsetObjectsFactory.class.getDeclaredMethod(

                        "setInstanceForTesting", HeadsetObjectsFactory.class);

        method.setAccessible(true);

        method.invoke(null, mObjectsFactory);

        HeadsetObjectsFactory.setInstanceForTesting(mObjectsFactory);

        doReturn(MAX_HEADSET_CONNECTIONS).when(mAdapterService).getMaxConnectedAudioDevices();

        doReturn(new ParcelUuid[] {BluetoothUuid.HFP})

                .when(mAdapterService)

        Assert.assertNull(mHeadsetService);

        mStateMachines.clear();

        mCurrentDevice = null;

        Method method =

                HeadsetObjectsFactory.class.getDeclaredMethod(

                        "setInstanceForTesting", HeadsetObjectsFactory.class);

        method.setAccessible(true);

        method.invoke(null, (HeadsetObjectsFactory) null);

        HeadsetObjectsFactory.setInstanceForTesting(null);

        TestUtils.clearAdapterService(mAdapterService);

    }

     *

     *  @param device test device

     *  @param bondState bond state value, could be invalid

     *  @param priority value, could be invalid, coudl be invalid

     *  @param priority value, could be invalid, could be invalid

     *  @param expected expected result from okToAcceptConnection()

     */

    private void testOkToAcceptConnectionCase(