Remove equals() method from PlayQueueItem

app/src/main/java/org/schabi/newpipe/player/playqueue/PlayQueueItem.java

@@ -64,20 +64,6 @@ public class PlayQueueItem implements Serializable {
         this.recoveryPosition = RECOVERY_UNSET;
     }
 
-    @Override
-    public boolean equals(final Object o) {
-        if (o instanceof PlayQueueItem) {
-            return url.equals(((PlayQueueItem) o).url);
-        } else {
-            return false;
-        }
-    }
-
-    @Override
-    public int hashCode() {
-        return url.hashCode();
-    }
-
     @NonNull
     public String getTitle() {
         return title;