chore: Remove obsolete actor (#27147)

superset/commands/explore/parameters.py

@@ -17,12 +17,9 @@
 from dataclasses import dataclass
 from typing import Optional
 
-from flask_appbuilder.security.sqla.models import User
-
 
 @dataclass
 class CommandParameters:
-    actor: User
     permalink_key: Optional[str]
     form_data_key: Optional[str]
     datasource_id: Optional[int]