Update the imports to androidx.test.filters.*

Bug: 316941721
Test: mmma .
Change-Id: Ia19c53850a0440b89434fcb5bf3fc1f61b58a46c

tests/legacy_unit/src/com/android/settings/UtilsTest.java

@@ -23,7 +23,8 @@ import android.content.pm.UserInfo;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.test.AndroidTestCase;
-import android.test.suitebuilder.annotation.SmallTest;
+
+import androidx.test.filters.SmallTest;
 
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;