DARWIN: remove errant typedef for etap_event_t
This code has been dead since its introduction, because XAFS_DARWIN_ENV
is a typo for AFS_DARWIN_ENV.
Introduced from day 1 of DARWIN support with commit
a41175cfbbf4d06ccfe14ae54bef8b7464ecd80b
"initial-darwin-support-
20010327".
No functional change should be incurred by this commit.
Change-Id: I6b74f01b4dd1230559ac8d75f0644071357f38b7
Reviewed-on: https://gerrit.openafs.org/14218
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>