staging: rtl8188eu: Remove usb_vendor_req.h header file

driver doesn't need usb_vendor_req.h.

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

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

diff --cc drivers/staging/rtl8188eu/os_dep/usb_intf.c
Simple merge