The underlying problem for system containers still hasn't been
solved, the part of issue 78356 that has been solved is only
home containers.
This reverts commit cbc35fd9aa.
This is a work around for #4788 (previously https://issues.guix.gnu.org/78356).
* gnu/system/linux-container.scm (container-script): Disable lock-mounts?
Change-Id: Ib8eacfc1f1f1a858acf19beb6c14e12c4648b8d9