ASTERISK-23512, correct inaccurate comment in manager.conf.sample

git-svn-id: https://origsvn.digium.com/svn/asterisk/certified/branches/11.6@426457 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/manager.conf.sample

@@ -3,8 +3,6 @@
 ;
 ; Third party application call management support and PBX event supervision
 ;
-; This configuration file is read every time someone logs in
-;
 ; Use the "manager show commands" at the CLI to list available manager commands
 ; and their authorization levels.
 ;