Staging: brcm80211: remove redefinition of size_t

No driver should ever do this.

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

@@ -28,10 +28,6 @@
 typedef unsigned long long int uintptr;
 #endif
 
-#if defined(_NEED_SIZE_T_)
-typedef long unsigned int size_t;
-#endif
-
 #define TYPEDEF_UINT
 #define TYPEDEF_USHORT
 #define TYPEDEF_ULONG