res_jabber: Remove CLI command 'jabber test'

The opinion of development was that it is both improper to have Matt's
personal email address used in the source and that the command wouldn't
be useful without it.

(closes issue AST-467)
Reported by: Malcolm Davenport
........

Merged revisions 374032 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 374045 from http://svn.asterisk.org/svn/asterisk/branches/10
........

Merged revisions 374059 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@374060 65c4cc65-6c06-0410-ace0-fbb531ad65f3