Quick Edit

This plugin will remove the templates from the Page edit screen, but the templates can still be accessed through the “Quick Edit” section when viewing all pages.

I reference the support docs for information, which is why I am posting this so others can be aware, it could be a drawback or an asset depending on how you are using it.

https://www.ads-software.com/extend/plugins/omit-parent-theme-page-templates/