Remove unused ClientSecretListFilters class

The list_client_secrets endpoint no longer uses pagination, so this
filter class is dead code.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gjtorikian

src/workos/types/connect/list_filters.py

@@ -5,7 +5,3 @@
 
 class ConnectApplicationListFilters(ListArgs, total=False):
     organization_id: Optional[str]
-
-
-class ClientSecretListFilters(ListArgs, total=False):
-    pass