staging: rtl8723bs: Remove Dead Include in include/drv_types.h

`rtw_intel_widi.h` is never included due to CONFIG_INTEL_WIDI.
This Patch removes the dead code.

Signed-off-by: Emanuel Bennici <benniciemanuel78@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>