staging: brcm80211: remove unused globals from dhd_common.c

Three global variable were defined but never used and have been
removed.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd_common.c

@@ -35,11 +35,6 @@ int dhd_msg_level;
 char fw_path[MOD_PARAM_PATHLEN];
 char nv_path[MOD_PARAM_PATHLEN];
 
-/* Last connection success/failure status */
-u32 dhd_conn_event;
-u32 dhd_conn_status;
-u32 dhd_conn_reason;
-
 extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf,
 			    uint len);
 extern void dhd_ind_scan_confirm(void *h, bool status);