MB-12935: Revert "Enable goxdcr manually until made available in product"

This reverts commit a2783a177d126882decb38f9c96c32837ab470ad.

This original commit breaks `make simple-test` on the master branch, hence I
revert it.

Change-Id: I9f17899fdc2176591356a4ce0630944b75177708
Reviewed-on: http://review.couchbase.org/44389
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Reviewed-by: Dave Rigby <daver@couchbase.com>
Tested-by: buildbot <build@couchbase.com>