project-lakitu: Upgrade systemd package to version 248.

Upgrade systemd package to v248. Removed the below patches, since they
are already present in v248.
    239-debug-extra.patch
    239-mount-don-t-propagate-errors-from-mount_setup_unit-f.patch
    239-networkd-fixes.patch
    239-no-stall-network-wait-online-for-ipv6.patch
    241-line-begins-match-full-string.patch
    242-meson-drop-misplaced-Wl-undefined-argument.patch
    243-seccomp-old-libsec-fix.patch
    246-basic-cap-list-parse-print-numerical-capabilities.patch
    CVE-2019-6454.patch

BUG=b/182613203
TEST=sponge2/ca70bc66-62d0-42b4-81ee-577fd6e91bf1
RELEASE_NOTE=Upgrade systemd to version 248.

Change-Id: I65e3bd497c3799bb69a12ceb470ac37c28b9e6fa
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/19271
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Meena Shanmugam <meenashanmugam@google.com>
36 files changed