[CLN] mail: remove compatibility methods on mail_template and update last addon using it

addons/mail/models/mail_template.py

@@ -451,7 +451,7 @@ class MailTemplate(models.Model):
         if fields is None:
             fields = ['subject', 'body_html', 'email_from', 'email_to', 'partner_to', 'email_cc', 'reply_to', 'scheduled_date']
 
-        res_ids_to_templates = self.get_email_template_batch(res_ids)
+        res_ids_to_templates = self.get_email_template(res_ids)
 
         # templates: res_id -> template; template -> res_ids
         templates_to_res_ids = {}
@@ -564,18 +564,3 @@ class MailTemplate(models.Model):
         if force_send:
             mail.send(raise_exception=raise_exception)
         return mail.id  # TDE CLEANME: return mail + api.returns ?
-
-    # compatibility
-    render_template_batch = render_template
-    get_email_template_batch = get_email_template
-    generate_email_batch = generate_email
-
-    # Compatibility method
-    # def render_template(self, cr, uid, template, model, res_id, context=None):
-    #     return self.render_template_batch(cr, uid, template, model, [res_id], context)[res_id]
-
-    # def get_email_template(self, cr, uid, template_id=False, record_id=None, context=None):
-    #     return self.get_email_template_batch(cr, uid, template_id, [record_id], context)[record_id]
-
-    # def generate_email(self, cr, uid, template_id, res_id, context=None):
-    #     return self.generate_email_batch(cr, uid, template_id, [res_id], context)[res_id]