Eliminated the "AREAS.BBS (MSG)" export group menu option since it only served

to confuse sysops (a holdover from the SBBSFIDO days) and would create an
AREAS.BBS file not compatible with SBBSecho. The "AREAS.BBS (SBBSecho)"
export group menu option remains and is the one that sysops should normally use
when wanting to create an SBBSecho-compatible AREAS.BBS file.