remove unused import

Author: B0pol

extractor/src/main/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudService.java

@@ -18,7 +18,6 @@
 import java.util.List;
 
 import static java.util.Arrays.asList;
-import static java.util.Collections.singletonList;
 import static org.schabi.newpipe.extractor.StreamingService.ServiceInfo.MediaCapability.AUDIO;
 import static org.schabi.newpipe.extractor.StreamingService.ServiceInfo.MediaCapability.COMMENTS;