35torcx: remove unused dependency on sysroot-boot
35torcx: remove unused dependency on sysroot-boot

This removes the dependency on `sysroot-boot` from
`torcx-profile-populate`, as the linked EFI-SYSTEM device is not
available on diskless PXE nodes.

The dependency itself is a leftover from a previous `ConditionPathExists`
for `first_boot` gating, which instead is now handled by
`torcx-profile-populate-generator`.
Thus it should be safe to simply drop.

Ref: https://github.com/coreos/bugs/issues/2491

coreos/bootengine