Clean up: fix incorrect @VisibleForTesting imports

Test: rebuild and robotests
Change-Id: I33d7ee1c0622c01f592920baaf01d44ad19d9a13

src/com/android/settings/connecteddevice/usb/UsbDefaultFragment.java

@@ -20,7 +20,6 @@ import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 
-import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.Utils;
@@ -33,6 +32,8 @@ import com.google.android.collect.Lists;
 
 import java.util.List;
 
+import androidx.annotation.VisibleForTesting;
+
 /**
  * Provides options for selecting the default USB mode.
  */