scripts/pkgdep: Don't update lib links after liburing installation

liburing's install target already puts all needed links in place.
In case there's a different version available on the system,
executing plain ldconfig may revert these links, pointing at a
different version than user may expect.

Still, this is just a mitigation. The assumption here is that
install_liburing() is called in a "clean" environment. Any potential
conflicts should be resolved by system's admin as we should not
touch anything that was already pre installed on the target
system.

Change-Id: I8137dfde13e1d2696aaff84535cce647f552d8ad
Signed-off-by: Michal Berger <michal.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/24650


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>