Staging: brcm80211: remove PTRSZ definition

It was never used.

Cc: Brett Rudley <brudley@broadcom.com>
Cc: Henry Ptasinski <henryp@broadcom.com>
Cc: Nohee Ko <noheek@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/include/typedefs.h

@@ -134,11 +134,6 @@ typedef signed long long int64;
 
 #define	AUTO	(-1)		/* Auto = -1 */
 
-/* define PTRSZ */
-#ifndef PTRSZ
-#define	PTRSZ	sizeof(char *)
-#endif
-
 #undef TYPEDEF_BOOL
 #undef TYPEDEF_UCHAR
 #undef TYPEDEF_USHORT