Remove obsolete method on obsolete class

When MailMessage portal type is not installed, then temp mail messages will use
this class. The plan is still to remove the class, but for now just remove this
method that can overload Event.send

product/ERP5/Document/MailMessage.py

@@ -68,24 +68,6 @@ class MailMessage(Event):
                     , PropertySheet.MailMessage
                     )
 
-  def send(self, from_url=None, to_url=None, msg=None, subject=None):
-    """
-      Sends a reply to this mail message.
-    """
-    # We assume by default that we are replying to the sender
-    if from_url is None:
-      from_url = self.getUrlString()
-    if to_url is None:
-      to_url = self.getSender()
-    if msg is not None and subject is not None:
-      header  = "From: %s\n"    % from_url
-      header += "To: %s\n\n"    % to_url
-      header += "Subject: %s\n" % subject
-      header += "\n"
-      msg = header + msg
-      self.MailHost.send( msg )
-
-
   security.declareProtected(Permissions.AccessContentsInformation, 'getTextContent')
   def getTextContent(self, default=_MARKER):
     """