crypto.h:
Remove unused code.
crypto.c:
Remove unused code and change some error detection to assertions.
This increases code covergae from 80.2% to 92.7% with no change
in functionality.

BKrev: 4148a3f73A3zw2reb3HkDh6RWIrcag


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@249 fd59a12c-fef9-0310-b244-a6a79926bd2f