tools: Removes option MAIL_PORT_SSL

Removes option MAIL_PORT_SSL. IMO this option is redundant since
currently MAIL_PORT or MAIL_PORT_SSL are used based on SSL turned
on/off. So it's easier to specify port number only in one option
(MAIL_PORT).

Change-Id: I76cd77d7f7227e0ae81467189c06c8841ff7f775
Bug-Url: https://bugzilla.redhat.com/1020920
Signed-off-by: Martin Perina <mperina@redhat.com>