watch module: fix acl

src/handlers/watch.py

@@ -7,7 +7,7 @@ from altrepo import altrepo
 from database.models import User
 from database.func import DB
 from data.keyboards import watch_keyboards
-from services.utils import _bold, is_valid_str
+from services.utils import _bold
 
 dp = Dispatch()
 
@@ -34,7 +34,7 @@ async def watch_test_handler(
         else:
             return
 
-    acl = acl if is_valid_str(acl) else "by-acl"
+    acl = acl or "by-acl"
     watch_data = await altrepo.parser.packages.watch_by_maintainer(maintainer, acl)
 
     if not len(watch_data):