Fix the following gcc warning:
drivers/staging/rtl8723bs/core/rtw_mlme.c:1100:24: warning: variable
‘pwrpriv’ set but not used [-Wunused-but-set-variable]
   struct pwrctrl_priv *pwrpriv;
                        ^~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200427032342.27211-7-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
            (!adapter_to_pwrctl(padapter)->bInSuspend) &&
            (!check_fwstate(&padapter->mlmepriv,
                            WIFI_ASOC_STATE|WIFI_UNDER_LINKING))) {
-               struct pwrctrl_priv *pwrpriv;
-
-               pwrpriv = adapter_to_pwrctl(padapter);
                rtw_set_ips_deny(padapter, 0);
                _set_timer(&padapter->mlmepriv.dynamic_chk_timer, 1);
        }