Delete dead links (#175)

Author: hugovk

docs/monthly-meeting/2023-06.md

@@ -33,8 +33,6 @@ Regrets:
     * Re-do the certification for this year!
 
 * Infra: stats for docs
-    * [Demo](https://hugovk-cpython.readthedocs.io/en/plausible/)
-    * [Dashboard](https://plausible.io/share/hugovk-cpython.readthedocs.io?auth=XDF9fK3EB2dEHCr4sC9hn)
     * Script in header: [hugovk/cpython#28b2355](https://github.com/hugovk/cpython/commit/28b23555030d58fdb52b74a547cc621c49690de0)
     * [More info](https://plausible.io/self-hosted-web-analytics)