remove unused codes

Author: fregataa

src/ai/backend/manager/models/rbac_models/migration/enums.py

@@ -81,16 +81,6 @@ def member_operations(cls) -> set[OperationType]:
             cls.READ,
         }
 
-    @classmethod
-    def monitor_operations(cls) -> set[OperationType]:
-        """
-        Returns a set of operations that are considered monitor operations.
-        Monitor operations are those that allow read access.
-        """
-        return {
-            cls.READ,
-        }
-
 
 class ScopeType(enum.StrEnum):
     DOMAIN = "domain"

src/ai/backend/manager/models/rbac_models/migration/user.py

@@ -25,8 +25,6 @@
     OperationType.GRANT_READ,
     OperationType.GRANT_UPDATE,
 }
-SUPERADMIN_OPERATIONS = OPERATIONS_IN_ROLE
-MONITOR_OPERATIONS = {OperationType.READ}
 
 
 class UserRole(enum.StrEnum):