removing pdf from DDS API and DWS UMN as causing the jobs failing

otc_metadata/data/services.yaml

@@ -233,7 +233,6 @@ documents:
   - hc_location: api/dds
     html_location: docs/dds/api-ref
     link: /document-database-service/api-ref/
-    pdf_name: dds-api-ref
     rst_location: api-ref/source
     service_type: dds
     title: API Reference
@@ -360,7 +359,6 @@ documents:
   - hc_location: usermanual/dws
     html_location: docs/dws/umn
     link: /data-warehouse-service/umn/
-    pdf_name: dws-umn
     rst_location: umn/source
     service_type: dws
     title: User Guide