Migrate frameworks/base/services/tests/servicestests to androidx.test

See go/jetpack-test-android-migration

cherrypicked from ag/4608401

Test: atest FrameworksServicesTests
Change-Id: I2d9641c681489135aa3167bb4c9b1296a1a6a4f7
diff --git a/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsShellCommandTest.java b/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsShellCommandTest.java
index 2214d74..a28a5a1 100644
--- a/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsShellCommandTest.java
+++ b/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsShellCommandTest.java
@@ -29,32 +29,28 @@
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
-import static java.io.FileDescriptor.*;
-
 import android.app.ActivityManager;
 import android.content.Context;
 import android.os.Binder;
-import android.os.Debug;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.ResultReceiver;
 import android.os.ShellCallback;
 import android.platform.test.annotations.Presubmit;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
 
 import com.android.internal.widget.LockPatternUtils;
 
-import junit.framework.Assert;
-
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
-import java.io.FileDescriptor;
+import static java.io.FileDescriptor.*;
 
 /**
  * Test class for {@link LockSettingsShellCommand}.