staging: rtl8723bs: remove unused variable pstapriv in rtw_dbg_port() in os_dep/ioctl...

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

remove unused variable. W=1 compiler issue:

drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:
In function ‘rtw_dbg_port’:
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:2448:19:
warning: unused variable ‘pstapriv’ [-Wunused-variable]
  struct sta_priv *pstapriv = &padapter->stapriv;

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/d433ffa5b52d6510811c882a80c1146c7d7be536.1617962215.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>