reverting cbr umn to the state before cbr_umn_0426

metadata.yaml

@@ -595,7 +595,7 @@ categories:
           pdf_name: obs-perms-cfg
         - html_location: docs/obs/api-swift
           rst_location: doc/swiftapi/source
-          title: API Reference (Swift) - Deprecated
+          title: API Reference (Swift)
           type: swiftapi
           pdf_name: obs-swiftapi
           hc_location: api_swift/obs
@@ -1127,11 +1127,6 @@ categories:
     - service_title: GaussDB NoSQL
       service_type: gaussdb_nosql
       docs:
-        - html_location: docs/gaussdb_nosql/api-ref
-          rst_location: api-ref/source
-          title: API Reference
-          type: api-ref
-          pdf_name: gaussdb_nosql-api-ref
         - html_location: docs/gaussdb_nosql/umn
           rst_location: umn/source
           title: User Guide