ipmi: Remove unneeded set_run_to_completion call

send_panic_events() calls intf->handlers->set_run_to_completion(),
but it has already been done in the caller function panic_event().
Remove it from send_panic_events().

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>