How to not show user signatures in comments? In D7, user signatures appear in their comments. It can be very annoying for many, especially when the signature is long or contain big pictures. So I'm wondering how to disable this?
There is feature in admin panel of Drupal to disable signature option directly. 
Follow the below steps:


Go to admin/config/people/accounts (admin > configuration > account
settings)
Uncheck "Enable signatures" checkbox under Personalization section.
Once finished, go down to the bottom of the screen and click the
Save Configuration button.