Update the imports to androidx.test.filters.*

Bug: 316941721
Test: mmma .
Change-Id: Ie40f0f60b3da50683262207cb9ec2a0c4049467a

core/tests/featureflagtests/src/android/util/FeatureFlagUtilsTest.java

@@ -24,9 +24,9 @@ import static junit.framework.Assert.assertTrue;
 import android.content.Context;
 import android.os.SystemProperties;
 import android.provider.Settings;
-import android.test.suitebuilder.annotation.SmallTest;
 
 import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
 import org.junit.After;