Remove HTML head meta tag from myst.yml

Remove unnecessary HTML head meta tag from configuration.

Author: henryiii

docs/myst.yml

@@ -54,7 +54,6 @@ site:
     - title: src
       url: https://github.com/scientific-python/cookie
   options:
-    html_head: '<meta name="readthedocs-project-slug" content="scientific-python-cookie">'
     favicon: assets/favicon.ico
     logo: assets/images/logo.svg
     logo_text: Scientific Python Development Guide