Remove unsupported Cloud-in-a-Box guide

OSISM removed the docs/cloud-in-a-box guide from osism.github.io
("Cloud in a Box is currently unsupported but was prominently featured
in the documentation"), which breaks getDocs.js since the source
directory it copied no longer exists.

Mirror that removal here:
- drop the cloud-in-a-box entry from docs.package.json so getDocs.js
  no longer tries to fetch the deleted directory
- drop the now-unused .gitignore entry for the fetched output
- remove the "Quick Start with Cloud-in-a-Box" section in docs/index.mdx
  (its internal link pointed at the removed guide and broke the build)
- remove the Cloud in a Box bullet in the FAQ

Historical release-notes mentions and the incidental Cloud-in-a-Box
note in the openstack-health-monitor guide are left untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Signed-off-by: Daniel Gerber <394442-gerbsen@users.noreply.gitlab.com>

Author: Daniel Gerber

.gitignore

@@ -8,7 +8,6 @@
 /docs/02-iaas/guides/troubleshooting-guides
 /docs/02-iaas/guides/upgrade-guides
 /docs/02-iaas/guides/index.md
-/docs/02-iaas/deployment-examples/cloud-in-a-box
 /docs/02-iaas/deployment-examples/testbed
 /docs/03-container/components
 /docs/04-operating-scs/components

docs.package.json

@@ -23,12 +23,6 @@
     "target": "docs/02-iaas/",
     "label": ""
   },
-  {
-    "repo": "osism/osism.github.io",
-    "source": "docs/cloud-in-a-box",
-    "target": "docs/02-iaas/deployment-examples",
-    "label": ""
-  },
   {
     "repo": "osism/osism.github.io",
     "source": "docs/testbed",

docs/08-faq/index.mdx

@@ -61,7 +61,6 @@ KaaS refers to Kubernetes as a Service, where providers offer Kubernetes Cluster
 
 **As a Cloud Service Provider**:
 
-- **Cloud in a Box**: Start with our pre-packaged solutions. [Link to Ciab](https://docs.scs.community/docs/iaas/deployment-examples/cloud-in-a-box/advanced-guides/cloud-in-a-box)
 - **Testbed**: Use the SCS test environment to experiment. [Link to Testbed/deployment example](https://docs.scs.community/docs/iaas/deployment-examples/cloud-in-a-box/advanced-guides/testbed)
 
 ## I want to use an SCS Cloud! How do I get started?

docs/index.mdx

@@ -20,14 +20,6 @@ SCS is built, backed, and operated by an active open-source community worldwide.
 
 The SCS IaaS Reference Implementation is based on [OSISM](https://osism.tech/).
 
-#### Quick Start with Cloud-in-a-Box
-
-You can do a single node installation for learning, testing or development purposes.
-The Cloud-in-a-Box configuration was built explicitly for this scenario.
-Check it out [here](/docs/iaas/deployment-examples/cloud-in-a-box)
-It comes with a complete set of services, even Ceph is part of it
-(despite of course not offering much redundancy on a single-node).
-
 #### Reference Implementation Testbed
 
 The fastest way to get in touch with SCS is to deploy a SCS cloud virtually.