docs: drop outdated documents about os-release and cgroupsv1

cgroupv1 is deprecated, and os-release has a fully fledged manpage

diff --git a/docs/_data/extra_pages.json b/docs/_data/extra_pages.json
index db155d2ffd515075b3a4aa1ef904b2f7fd1fc609..09a6bed09c9615ad508ece700f8e81745de256fe 100644 (file)
--- a/docs/_data/extra_pages.json
+++ b/docs/_data/extra_pages.json
@@ -399,16 +399,6 @@
     "title": "C++ bindings for sd-bus",
     "url": "https://github.com/Kistler-Group/sdbus-cpp/"
   },
-  {
-    "category": "Documentation for Developers - external links",
-    "title": "On /etc/os-release",
-    "url": "http://0pointer.de/blog/projects/os-release.html"
-  },
-  {
-    "category": "Documentation for Developers - external links",
-    "title": "Control Groups vs. Control Groups",
-    "url": "http://0pointer.de/blog/projects/cgroups-vs-cgroups.html"
-  },
   {
     "category": "Documentation for Developers - external links",
     "title": "The 30 Biggest Myths about systemd",