fix style issue found by flake8

src/nominatim_db/clicmd/admin.py

@@ -57,7 +57,6 @@ class AdminFuncs:
         mgroup.add_argument('--place-id', type=int,
                             help='Analyse indexing of the given Nominatim object')
 
-
     def run(self, args: NominatimArgs) -> int:
         # pylint: disable=too-many-return-statements
         if args.warm:
@@ -93,7 +92,6 @@ class AdminFuncs:
 
         return 1
 
-
     def _warm(self, args: NominatimArgs) -> int:
         try:
             import nominatim_api as napi