staging: brcm80211: remove unused fields from struct si_info

Two fields were not used in the driver code so they have been removed
from struct si_info definition.

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/brcmsmac/aiutils.h

@@ -470,10 +470,6 @@ struct si_info {
 
 	void *pch;		/* PCI/E core handle */
 
-	gpioh_item_t *gpioh_head;	/* GPIO event handlers list */
-
-	bool memseg;		/* flag to toggle MEM_SEG register */
-
 	char *vars;
 	uint varsz;