staging: rtl8188eu: Remove function rtw_getbbrfreg_cmdrsp_callback()

rtw_getbbrfreg_cmdrsp_callback() is a callback for _Read_BBREG and _Read_RFREG
commands but these commands are never issued by driver.

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/rtl8188eu/core/rtw_cmd.c
Simple merge

diff --cc drivers/staging/rtl8188eu/include/rtw_cmd.h
Simple merge