Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

tests/robotests/src/com/android/settings/fuelgauge/RestrictAppPreferenceControllerTest.java

@@ -32,6 +32,8 @@ import android.content.Intent;
 import android.os.UserHandle;
 import android.os.UserManager;
 
+import androidx.preference.Preference;
+
 import com.android.settings.R;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.fuelgauge.batterytip.AppInfo;
@@ -48,8 +50,6 @@ import org.robolectric.RuntimeEnvironment;
 import java.util.ArrayList;
 import java.util.List;
 
-import androidx.preference.Preference;
-
 @RunWith(SettingsRobolectricTestRunner.class)
 public class RestrictAppPreferenceControllerTest {
     private static final int ALLOWED_UID = 111;