fix(lint): remove unused ApplicationType import

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ImTotem

src/bcsd_api/graphql/schema.py

@@ -7,7 +7,6 @@
 
 from bcsd_api.apply import resolvers as apply_resolvers
 from bcsd_api.apply.types import (
-    ApplicationType,
     BatchResult,
     MyApplication,
     PagedApplications,