targetting: Remove old sysfs path

This was required for old kernels (4.7 and earlier). It is unlikely
anyone is using modern OpenBMC on these kernels, so drop support.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: Ib5c50cc3c07a38fc7af75b6784dac692c7f8b153
2 files changed