removing not suported documents from Swisscloud

otc_metadata/data/documents/ims-public-images.yaml

@@ -0,0 +1,8 @@
+---
+html_location: docs/ims/public-images
+link: /image-management-service/public-images/
+pdf_name: ims-public-images
+rst_location: doc/public-images/source
+service_type: ims
+title: Public Image Introduction
+type: public-images