staging: rtl8188eu:Drop rtw_handle_dualmac() function calls in rtw_usb_if1_init()

rtw_usb_if1_init() initializes pbuddy_padapter variable which is not
being used.

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