refactor: remove dead installer/lib/zfs.sh

The library was sourced but only zfs_preflight was reachable from
install_zfs(); the other ten functions either had names that were
never called (create_zfs_datasets, configure_zfs_pacman_hook, etc.)
or were shadowed by same-named definitions in the monolithic
installer/archangel (create_zfs_pool, configure_zfsbootmenu,
configure_zfs_services).

Inlined zfs_preflight into archangel and dropped the source line.
Removes a trap where fixes appear to be "mirrored" but only one
copy actually runs.

0 files changed, 0 insertions, 0 deletions