I was able to find the answer in Ivan Yelizariev's post at 

https://www.odoo.com/forum/help-1/question/remove-email-footer-sent-by-xxx-using-openerp-48296

I Quote his answer -

"For odoo 9+  footer can be customized via Template

·         Activate developer mode (Top right-hand corner -> About) 

·         Navigate to Settings\Technical\Email\Templates

·         open "Notification Email"

·         click "Edit"

·         click "Code View" button: </>

·         Change footer as you need

You can modify the footer on the invoice PDF from Settings > General Settings > Configure your company data > Report Configuration. You can create and edit the email templates on the fly when you choose "Send by Email".

+1