staging: rtl8188eu: remove all RT_TRACE calls from core/rtw_mlme.c

staging: rtl8188eu: remove all RT_TRACE calls from core/rtw_mlme.c

Remove all RT_TRACE calls from core/rtw_mlme.c as this macro is
unnecessary, and these calls are dubious in terms of necessity.
Removing all calls will ultimately allow the removal of the macro
itself.

Also remove rtw_atimdone_event_callback and rtw_cpwm_event_callback
functions and their associated header declarations/usages, as all
they do is call RT_TRACE and nothing else.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210625000756.6313-10-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>