Drop changelog.md changes per review

Changelog convention lives in developer-docs, not this repo.

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

Author: salmanbshah

descriptions/0/changelog.md

@@ -1,5 +1,5 @@
-## Data Connectors: `GET /data_connectors/{id}`
-Added endpoint for retrieving a single data connector by ID with full detail including `data_inputs`, `response_fields`, `object_mappings`, and `audiences`. Introduced `data_connector_detail` schema.
+## `GET /data_connectors/{id}` added
+Added missing show endpoint for retrieving a single data connector by ID.
 
 ## `GET /messages/whatsapp/status` added
 Added missing endpoint for checking WhatsApp message delivery status.