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.

Lustre-change: https://review.whamcloud.com/34137
Lustre-commit: ee009da38d016a129b975aa3db77c675a17c1c3d

Test-Parameters: trivial
Signed-off-by: Thomas Stibor <t.stibor@gsi.de>
Change-Id: Id0a945d5b76e5c35cf858e3ab224efa342cde28d
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Nathaniel Clark <nclark@whamcloud.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/34508
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>