staging: r8188eu: remove unnecessary rtw_get_passing_time_ms call

Remove the rtw_get_passing_time_ms call in send_beacon.

Calling rtw_get_passing_time_ms makes no sense if we discard the result.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220409163212.241122-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -5751,8 +5751,6 @@ unsigned int send_beacon(struct adapter *padapter)
 	int	issue = 0;
 	int poll = 0;
 
-	u32 start = jiffies;
-
 	clear_beacon_valid_bit(padapter);
 
 	do {
@@ -5770,7 +5768,6 @@ unsigned int send_beacon(struct adapter *padapter)
 	if (!bxmitok)
 		return _FAIL;
 
-	rtw_get_passing_time_ms(start);
 	return _SUCCESS;
 }