brcmfmac: Remove sleep on del_station.

Currently there is a sleep after disconnect on del_station. This
timeout is not needed (anymore) and is causing problems with p2p
setup, because remote side disconnects then supplicant will do
del_station and while it waits the 400ms remote side will already
reconnect and that is something supplicant cant handle.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index e7ef827..f283a7e 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -3895,12 +3895,7 @@
 				     &scbval, sizeof(scbval));
 	if (err)
 		brcmf_err("SCB_DEAUTHENTICATE_FOR_REASON failed %d\n", err);
-	/*
-	 * Wait for the deauth event to come, supplicant will do the
-	 * delete iface immediately and we will have problem in sending
-	 * deauth frame if we delete the bss in firmware
-	 */
-	brcmf_delay(400);
+
 	brcmf_dbg(TRACE, "Exit\n");
 	return err;
 }