chore: revert open in coder docs for now (#4154)

* chore: revert open in coder docs for now

* remove in dogfood

docs/admin/open-in-coder.md

@@ -1,27 +0,0 @@
-# Open in Coder Button
-
-Add a Markdown button to your project's `README.md` to get your developers up and running with Coder with a few clicks.
-
-A basic example looks like this:
-
-```markdown
-[![Open in Coder](https://cdn.coder.com/embed-button.svg)](https://<deployment-url>/templates/<template-name>)
-```
-
-which renders like this:
-
-![Open in Coder](https://cdn.coder.com/embed-button.svg)
-
-You can customize this to take developers directly to your team's template. Read on to learn more.
-
-### Customization
-
-The underlying link for this button consists of the following pieces:
-- <deployment-url>: where your Coder deployment lives i.e. https://dev.coder.com
-- <template-name>: name of template i.e. coder
-
-### template name
-
-A template to redirect your developers to after they authenticate on your deployment.
-
-Example: https://dev.coder.com/templates/coder

docs/manifest.json

@@ -188,11 +188,6 @@
           "title": "Enterprise",
           "description": "Learn how to enable Enterprise features.",
           "path": "./admin/enterprise.md"
-        },
-        {
-          "title": "Open in Coder Button",
-          "description": "Learn how to create an 'Open in Coder' button.",
-          "path": "./admin/open-in-coder.md"
         }
       ]
     },

dogfood/README.md

@@ -1,7 +1,5 @@
 # dogfood template
 
-[![Open in Coder](https://cdn.coder.com/embed-button.svg)](https://dev.coder.com/templates/coder)
-
 Ammar is this template's admin.
 
 ## Personalization