GallerySearchTask: remove leftover testing code

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

app/src/main/java/com/owncloud/android/ui/asynctasks/GallerySearchTask.java

@@ -101,13 +101,6 @@ public class GallerySearchTask extends AsyncTask<Void, Void, GallerySearchTask.R
 
                 boolean emptySearch = parseMedia(startDate, endDate, result.getData());
                 long lastTimeStamp = findLastTimestamp(result.getData());
-
-                try {
-                    Thread.sleep(10000);
-                } catch (InterruptedException e) {
-                    e.printStackTrace();
-                }
-
                 return new Result(result.isSuccess(), emptySearch, lastTimeStamp);
             } else {
                 return new Result(false, false, -1);