remove gaussdb nosql

Reviewed-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-authored-by: tischrei <tino.schreiber@t-systems.com>
Co-committed-by: tischrei <tino.schreiber@t-systems.com>

otc_metadata/data/services/gaussdb_nosql.yaml

@@ -1,16 +0,0 @@
----
-environment: internal
-repositories:
-- environment: internal
-  repo: docs/gaussdb-nosql
-  type: gitea
-- environment: public
-  repo: opentelekomcloud-docs/gaussdb-nosql
-  type: github
-service_category: database
-service_title: GaussDB NoSQL
-service_type: gaussdb_nosql
-service_uri: gaussdb-nosql
-teams:
-- name: docs-database-rw
-  permission: write