Hello, 

There are 2 options :

1. Override and hide the parent "get_signature_footer" method in class of mail.notification ( in mail module ). By doing so when Odoo update anything in that method later, you will not able to get that latest code. Remove odoo content in following block.

        sent_by = _('Sent by %(company)s using %(odoo)s')

        signature_company = '<br /><small>%s</small>' % (sent_by % {

            'company': company,

            'odoo': "<a style='color:inherit' href='https://www.odoo.com/'>Odoo</a>"
        })

2. I know following way is not good but I choose this way to keep active Odoo standard method too. I have inherited and just remove the odoo content by standard string function of python ( find and replace ). 

def get_signature_footer(self, cr, uid, user_id, res_model=None, res_id=None, context=None, user_signature=True):
        footer=super(mail_notification,self).get_signature_footer(cr, uid, user_id, res_model=res_model, res_id=res_id, context=context, user_signature=user_signature)
        str=footer.replace("""using <a style='color:inherit' href='https://www.odoo.com/'>Odoo</a>""",' ') 
        return str

By going with 2nd way, I am still able to keep active Odoo main method. 

You can implement any of above 2 ways ! 

I am sure this will help you !

You can try my modules, if you use odoo 8:

• mail_delete_access_link -- deletes "About ..." or "Access ..." part of footer https://github.com/yelizariev/addons-yelizariev/blob/8.0/mail_delete_access_link/mail_delete_access_link.py 

• mail_delete_sent_by_footer -- deletes "Sent by ..." part of footer https://github.com/yelizariev/addons-yelizariev/blob/8.0/mail_delete_sent_by_footer/mail_delete_sent_by_footer.py

• mail_delete_odoo_footer -- wrapper for two modules above https://apps.odoo.com/apps/modules/8.0/mail_delete_odoo_footer

For odoo 9+  footer can be customized via Template

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

• Navigate to Settings\Technical\Email\Templates

• Select (set checkbox)  "Notification Email" record

• click Action ->Export

• add field "Body" to export fields

• click "Export to Field"

• open csv via your editor

• Change footer as you need

• Navigate to Settings\Technical\Email\Templates

• click "Import"

• Validate and Import your file
  

As far as I can read the code (see line 133), nothing has been foreseen to remove this sentence in the footer.

Thank you  Ivan Yelizariev.. your module helped me

Would have been nice if Settings > Application Terms > Translated Terms worked, but it unfortunately didn't for me. Haven't restarted the ERP though (since we try not to "disturb" it in production usage).

Would be glad to hear from anyone who successfully trimmed the footnote by editing Translated Terms.

Thanks

Ashant Chalasani / euroblaze

Have also look at this module: https://www.odoo.com/fr_FR/forum/aide-1/question/how-to-change-favicon-38363. Beside the mentioned feature, it also allows customizaing by each user individually

Have you tried this ?

https://www.odoo.com/apps/modules/8.0/disable_openerp_online/