Staging: rtl8723au: Remove unused function rtw_atimdone_event_callback23a
This patch fixes the following sparse warning:
warning: symbol 'rtw_atimdone_event_callback23a' was not declared.
Should it be static?
rtw_atimdone_event_callback23a is local to the file rtw_mlme.c but
it isn't exposed in a header file anywhere. Moreover it is never called
from anywhere as well.