delete business dashboard

Reviewed-by: Tino Schreiber <tino.schreiber@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/bd-umn.yaml

@@ -1,13 +0,0 @@
----
-hc_location: usermanual/bd
-html_location: docs/bd/umn
-link: /business-dashboard/umn/
-rst_location: umn/source
-service_type: bd
-title: User Guide
-type: umn
-cloud_environments:
-  - name: eu_de
-    visibility: public
-    pdf_visibility: hidden
-    pdf_enabled: false