fix import due to downloader package move

Author: XiangRongLin

extractor/src/test/java/org/schabi/newpipe/extractor/services/media_ccc/MediaCCCLiveStreamListExtractorTest.java

@@ -2,9 +2,8 @@
 
 import org.junit.BeforeClass;
 import org.junit.Test;
-import org.schabi.newpipe.DownloaderTestImpl;
+import org.schabi.newpipe.downloader.DownloaderTestImpl;
 import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.kiosk.KioskExtractor;
 

extractor/src/test/java/org/schabi/newpipe/extractor/services/media_ccc/MediaCCCRecentListExtractorTest.java

@@ -2,7 +2,7 @@
 
 import org.junit.BeforeClass;
 import org.junit.Test;
-import org.schabi.newpipe.DownloaderTestImpl;
+import org.schabi.newpipe.downloader.DownloaderTestImpl;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.kiosk.KioskExtractor;
 import org.schabi.newpipe.extractor.stream.StreamInfoItem;