Get rid of unneeded code, fix a spelling mistake, and use registry state a bit...

Get rid of unneeded code, fix a spelling mistake, and use registry state a bit more. (issue #8402 reported by rizzo)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@50709 65c4cc65-6c06-0410-ace0-fbb531ad65f3