The problem:
I’m getting a lot of spammers who clearly want their comment approved so they get a link to their website/url. How do I remove the website field when folks submit comments?
The Solution:
Add this to your theme’s functions.php:
https://gist.github.com/vfontjr/87b2be79de5d8b6aa7d6dd618a09e8f1#file-remove-url-wordpress-comment-form-php