staging: rtl8723bs: remove unused cur_network variable in rtw_dbg_port() in os_dep...

staging: rtl8723bs: remove unused cur_network variable in rtw_dbg_port() in os_dep/ioctl_linux.c

remove unused variable. Fix W=1 compiler warning:

drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:
In function ‘rtw_dbg_port’:
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:2447:23:
warning: unused variable ‘cur_network’ [-Wunused-variable]
  struct wlan_network *cur_network = &(pmlmepriv->cur_network);

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/6aed13408f912b6c36a19a5e91e17b1126fc6247.1617962215.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>