libertas: remove unused generic RESET command

The generic reset command is unused.  Each interface type needs to
handle the reset command differently since after reset, the firmware is
dead and interface-specific mechanisms must be used to reinitialize the
card.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
4 files changed