I have taken over as webmaster for a site and the admin emails are being sent to the old webmaster/admin's email who set up the Joomla site. I have checked all through the site and they are not listed as an Admin. Do you have any suggestions or ideas on how I can remove their email?
What emails you are talking about? If it's from Membership Pro, then you can go to Membership Pro -> Configuration, look at Notification Emails config option, check to see whether there is his email entered there, if Yes, remove it
The emails are the ones sent to the admins after a new subscription/renewal. The old webmaster is still receiving emails even though their email isn't in listed in the configuration options you referenced above.
If I disable Admin Notifications and just list the email addresses I would like notifications to be sent to would this be a possible workaround?