93075bdb81
This used to be needed when interface renames were broadcast using the
ifnet_departure_event eventhandler, but since commit 349fcf079c
("net: add ifnet_rename_event EVENTHANDLER(9) for interface renaming"),
it has no purpose. Remove it.
Reviewed by: pouria, zlei
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D55171