View and edit all Yoast SEO Titles on one page and Meta Descriptions on another.
Log in, hover over "SEO" and click "Bulk Title Editor"
Log in, hover over "SEO" and click "Bulk Description Editor"
Make sure you have WordPress SEO by Yoast installed and activated, that plugin adds the "SEO" menu item.
Clear out the "New Yoast SEO Title" textbox or the "New Yoast Meta Description" textarea, then click save. You will receive a warning before the SEO Title/Meta Description is deleted.
No, I felt that wouldn't be a very nice feature.