Revert "MB-10721 limit the UI to ro_admin or admin access to /pools/default"

This reverts commit 342aebf2e5eef2501b1457fe5e659cd8d0b16ae4.

not needed if http://review.couchbase.org/36121/ will be submitted

Change-Id: Iba4a4901a859a738266f07f6b16bf731fe1d3017
Reviewed-on: http://review.couchbase.org/36122
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>