disable import for bcc and sd

Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Sebastian Gode <sebastian.gode@telekom.de>
Co-committed-by: Sebastian Gode <sebastian.gode@telekom.de>

otc_metadata/data/documents/bcc-api-ref.yaml

@@ -6,6 +6,7 @@ rst_location: api-ref/source
 service_type: bcc
 title: API Reference
 type: api-ref
+disable_import: true
 cloud_environments:
   - name: eu_de
     visibility: internal

otc_metadata/data/documents/bcc-umn.yaml

@@ -6,6 +6,7 @@ rst_location: umn/source
 service_type: bcc
 title: User Guide
 type: umn
+disable_import: true
 cloud_environments:
   - name: eu_de
     visibility: internal

otc_metadata/data/documents/sd-umn.yaml

@@ -6,6 +6,7 @@ rst_location: umn/source
 service_type: sd
 title: User Guide
 type: umn
+disable_import: true
 cloud_environments:
   - name: swiss
     visibility: public