Remove unused imports

Author: coffeemakr

src/main/java/org/schabi/newpipe/extractor/stream/SubtitlesFormat.java

@@ -1,7 +1,5 @@
 package org.schabi.newpipe.extractor.stream;
 
-import org.schabi.newpipe.extractor.Subtitles;
-
 public enum SubtitlesFormat {
     // YouTube subtitles formats
     // TRANSCRIPT(3) is default YT format based on TTML,

src/test/java/org/schabi/newpipe/Downloader.java

@@ -9,7 +9,6 @@
 import java.net.URL;
 import java.net.UnknownHostException;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.Map;