Update the imports to androidx.test.filters.*

Bug: 316941721
Test: mmma .
Change-Id: Ia2c9a6f095a034d7eb8592a94531083d7b3e85ee

core/tests/BroadcastRadioTests/src/com/android/server/broadcastradio/hal2/ProgramInfoCacheTest.java

@@ -22,8 +22,8 @@ import android.hardware.radio.ProgramList;
 import android.hardware.radio.ProgramSelector;
 import android.hardware.radio.RadioManager;
 import android.hardware.radio.UniqueProgramIdentifier;
-import android.test.suitebuilder.annotation.MediumTest;
 
+import androidx.test.filters.MediumTest;
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.server.broadcastradio.ExtendedRadioMockitoTestCase;