Revert "Handle rare bug when download is not deleted from download_dict on error"

This reverts commit 136924ffd4.

Signed-off-by: lzzy12 <jhashivam2020@gmail.com>

bot/helper/mirror_utils/status_utils/aria_download_status.py

@@ -66,7 +66,6 @@ class AriaDownloadStatus(Status):
             status = MirrorStatus.STATUS_CANCELLED
         elif download.has_failed:
             status = MirrorStatus.STATUS_FAILED
-            self.__listener.onDownloadError('Unknown Error')
         else:
             status = MirrorStatus.STATUS_DOWNLOADING
         return status