docs: drop blog from docs

We have been using our main website on Wordpress for blog.
All posts have been moved there over an year ago.

Signed-off-by: Gustavo Padovan <[email protected]>

Author: padovan

kernelci.org/.gitattributes

@@ -22,18 +22,4 @@ content/en/logo/background.jpeg filter=lfs diff=lfs merge=lfs -text
 content/en/logo/kernelci_brand.pdf filter=lfs diff=lfs merge=lfs -text
 content/en/logo/kernelci_brand.svg filter=lfs diff=lfs merge=lfs -text
 static/image/kernelci-architecture.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/news/2020/08/19/kernelci-blog.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/05/11/featured-image-blog2.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/ci-system-usage-1024px.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/kernelci-community-survey-report-1200x325-1.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/reporting-1024px.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/response-time-1024px.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/roles-distribution-1024px.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/07/09/upstream-contributions-1024px.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/08/21/patched_revision2.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/08/21/revision1.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/08/21/kcidb_object_relations.svg filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2020/08/21/kcidb_object_submitting.gif filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2021/03/16/looking-back-looking-forward.png filter=lfs diff=lfs merge=lfs -text
 static/image/kernelci-horizontal-color.png filter=lfs diff=lfs merge=lfs -text
-content/en/blog/posts/2022/rfp-sysadmin/RFP-Sysadmin-Maintenance-2022-v3.pdf filter=lfs diff=lfs merge=lfs -text

kernelci.org/content/en/_index.md

@@ -1,14 +1,5 @@
 ---
 title: "Documentation"
-
-cascade:
-- type: "blog"
-  toc_root: true
-  _target:
-    path: "/blog/**"
-- type: "docs"
-  _target:
-    path: "/**"
 ---
 
 *Welcome to the KernelCI documentation website!*