LU-11902 build: Remove obsolete lustre-utils files and entries

LU-11902 build: Remove obsolete lustre-utils files and entries

DEB packages can be build for server or client, where naming
convention for server is:
* lustre-server-modules-*
* lustre-server-utils-*
and for client:
* lustre-client-modules-*
* lustre-client-utils-*
Previously the util package was named lustre-utils which
is now obsolete due to the client and server separation
and thus can be removed.

Test-Parameters: clientdistro=ubuntu1604 trivial
Signed-off-by: Thomas Stibor <t.stibor@gsi.de>
Change-Id: Id0a945d5b76e5c35cf858e3ab224efa342cde28d
Reviewed-on: https://review.whamcloud.com/34137
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Nathaniel Clark <nclark@whamcloud.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>