Note: As of July 1, 2022. Mediavine no longer supports AMP ads.
Deleting the AMP plugin outright will cause 404 errors on your AMP pages, all of them. Subsequently, having 404s on your site is not a great idea for SEO. Now that the current version of Mediavine Control Panel no longer has any AMP options, the best approach will be to redirect your AMP pages to their non-AMP version.
STEP-BY-STEP PROCESS TO REDIRECT AMP PAGES
The most popular plugin for this kind of solution is Redirection and this help page will have screenshots specific to this plugin. Other plugins could theoretically accomplish the same goal, but for the sake of simplicity, we'll focus on Redirection:
Check one of your AMP pages and verify the URL structure. Your AMP pages will either end in /amp, ?amp, or sometimes the AMP pages can be accessed by both. Make a mental note of the url structure.
After installation and activation of the Redirection plugin, click on the plugin's settings link from the Plugins section of your WordPress Admin
Click on "Redirects" in the upper left corner of the plugin's settings page and then click "Add New".
If your AMP page urls end in /amp, then enter ^/(.*)\/amp for the Source URL, enter https://enter-your-domain-here.com/$1 for the Target URL, and click on the URL Options/Regex dropdown and select Regex. Lastly just click Add Redirect:
If your AMP page urls end in ?amp, then you follow the same steps as above, but you would enter ^/(.*)\?amp as the Source URL.
With your redirect in place, simply clear the caching from any caching plugin you have installed and then double-check your AMP pages. You'll know it's working properly when it redirects you to the non-AMP equivalent.
Wait. This part isn't fun, but we need to wait for Google to de-index the AMP pages. You can check this in your Search Console in the AMP section.
Once there are no AMP pages being indexed by Google, the next step is to monitor Google Analytics for AMP traffic. Over time, it should fall to zero. This process can take a while, and varies from site to site, so patience is key.
After the AMP pages have been de-indexed and there is no longer any AMP traffic after 30 days, remove the AMP plugin.
What about a different way to handle redirects?
We recommend working with your host or developer to redirect your AMP traffic to regular mobile pages.