Add steps on removing integration docs (#2852)

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: c0ffeeca7

docs/documenting/create-page.md

@@ -1,5 +1,5 @@
 ---
-title: "Create a new page"
+title: "Adding an integration page"
 ---
 
 To create a new integration page, follow these steps:

docs/documenting/remove-page.md

@@ -0,0 +1,10 @@
+---
+title: "Removing an integration page"
+---
+
+If you remove an integration, also remove the related integration documentation.
+
+1. Delete the related [integration documentation page](https://github.com/home-assistant/home-assistant.io/tree/current/source/_integrations).
+2. Remove the related logos and icons from the [Brands repository](https://github.com/home-assistant/brands).
+3. Remove the entry in the [`codeowners` file](https://github.com/home-assistant/home-assistant.io/blob/current/CODEOWNERS), as they did in [this PR](https://github.com/home-assistant/home-assistant.io/pull/41531/files#diff-fcf14c4b7b34fe7a11916195871ae66a59be87a395f28db73e345ebdc828085bL268).
+4. Add a 301 entry in the [redirect file](https://github.com/home-assistant/home-assistant.io/blob/current/source/_redirects#L516), in the section on **Removed integrations**.

sidebars.js

@@ -325,6 +325,7 @@ module.exports = {
         "documenting/general-style-guide",
         "documenting/yaml-style-guide",
         "documenting/create-page",
+        "documenting/remove-page",
         "documenting/integration-docs-examples",
       ],
     },