How to Stop systemd-tty-ask-password-agent Wall Message on Scientific Linux 7

I was trying a new way to setup my Linux machine for Enterprise authentication. I got it to work partially. There is a message which keeps popping up in terminal window:

Broadcast message from [email protected] (Tue 2015-01-06 10:39:34 EST):

Password entry required for 'Password for [email protected]//home.mycompany.com:' (PID 9943).
Please enter password with the systemd-tty-ask-password-agent tool!

To turn off this message, type this command in a terminal:

sudo systemctl stop systemd-ask-password-wall.service

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