Fix docstring format in draft.py to use reStructuredText

Remove non-standard :statuscode: fields; use plain reST format
consistent with the rest of the codebase.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Author: Tim020

server/controllers/api/show/script/draft.py

@@ -18,10 +18,6 @@ async def delete(self):
         Deletes the draft file and DB record, then closes the room so all
         connected clients receive ``ROOM_CLOSED`` and revert to the saved
         script.
-
-        :statuscode 200: Draft discarded successfully.
-        :statuscode 404: No show or script found.
-        :statuscode 403: Insufficient permissions.
         """
         current_show = self.get_current_show()
         show_id = current_show["id"]