Mike Schinkel

NewClarity

This plugin does what it names says; it omits page templates from the parent theme from the template dropdown when you are editing a “Page” in the WordPress admin.

Omit Parent Theme Page Templates

Omits Parent Page Templates from the "Page" edit screen in the WordPress admin.

Hiroaki Miyashita

The Custom Post Type Page Template plugin enables custom post types directly to add page templates of the page type.
It is unavailable to use page templates of the page type in other post types by default. Most of themes have original page templates of the page type as part of themes. Twenty Eleven also has two page templates. It is convenient directly to use page templates in custom post types except the page type, isn’t it?
The Custom Post Type Page Template plugin makes it possible to do.
Are you interested in other plugins? See the following site <a href="https://www.cmswp.jp/" rel="nofollow ugc">CMS x WP</a>.
<h3>Uninstall</h3>
<ol>
<li>Deactivate the plugin</li>
<li>That’s it! 🙂</li>
</ol>

Custom Post Type Page Template

This plugin enables custom post types directly to add page templates of the page type.

Omit Parent Theme Page Templates vs Custom Post Type Page Template