remove "default from e-mail address" field from blog settings page?

[Glen Mazza]

Hi Team, I'm working on ROL-2018, an email notification routing issue.  
On the blog settings page we define two email addresses: (1) for the 
blog owner and (2) for the default "from" address for all notifications, 
where (2) defaults to (1).  The idea being, if (1) is sensitive/private, 
enter in (2) so everyone in the world sees (2) instead.  I think this is 
superfluous -- if (1) is sensitive, just use (2) as the blog owner email 
address to begin with.  I don't think we need to store two email 
addresses per blog, nor do we want to store sensitive email addresses 
anyway if we can avoid it.

At any rate, Roller is not even using (1) or (2) for sending emails -- 
it doesn't know the email account password, so it couldn't anyway, 
unless we're to have Roller spoof email addresses.  Roller uses the 
email address that the blog admin configures in his Java Mail setup 
(Tomcat server.xml, for example) for all message routing.  So I'm 
thinking we should remove the "Default /from/ e-mail address for 
notifications" field on the blog settings page. WDYT?

Thanks,
Glen