remove audit.json installation for enterprise build

Change-Id: I2914ce479da837d3dbd92042eb142ec3ec57065e
Reviewed-on: http://review.couchbase.org/44100
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Merge remote-tracking branch 'couchbase/master'

* couchbase/master:
  remove audit.json installation for enterprise build

Change-Id: I29ba0fd70efbc70db7a18cb9ab80c784a12230e3