This reverts commit
faeffa73a81ab5b59acfadeb571431fb0e42af70.
There isn't really much point in dropping the Conflicts= since shutting
down this service is basically free as it doesn't have anything running.
Also, the patch was incomplete, because shutdown.target was still listed
in Before=.
Description=Apply Kernel Variables
Documentation=man:systemd-sysctl.service(8) man:sysctl.d(5)
DefaultDependencies=no
+Conflicts=shutdown.target
After=systemd-readahead-collect.service systemd-readahead-replay.service
Before=sysinit.target shutdown.target
ConditionPathIsReadWrite=/proc/sys/