Fix soft 404

[bmaupin]

This page is giving a soft 404 in the Google Search Console: https://bmaupin.github.io/wiki/archive/programming/python/python-mysql.html

1. [x] Request a rescanning
2. [x] Wait for the rescanning to complete
3. [x] Remove the page from the siteindex (https://stackoverflow.com/a/67066949/399105)
4. [x] If the error still persists, stop indexing it: https://stackoverflow.com/a/35130059/399105
   • First try putting the <meta> tag in the body of the page; apparently this works!
     • https://stackoverflow.com/a/65775815/399105
     • https://www.mariehaynes.com/noindex-tag-in-body-of-page/
   • https://longqian.me/2017/02/12/jekyll-robots-configuration/