[PCMCIA] Remove a set of unused definitions.

SOCKET_SHUTDOWN_PENDING, SOCKET_RESET_PENDING, SOCKET_IO_REQ and
pcmcia_socket's real_clients member are all unused.

drivers/pcmcia/cs_internal.h

@@ -100,11 +100,8 @@ struct cis_cache_entry {
 /* Flags in socket state */
 #define SOCKET_PRESENT		0x0008
 #define SOCKET_INUSE		0x0010
-#define SOCKET_SHUTDOWN_PENDING	0x0020
-#define SOCKET_RESET_PENDING	0x0040
 #define SOCKET_SUSPEND		0x0080
 #define SOCKET_WIN_REQ(i)	(0x0100<<(i))
-#define SOCKET_IO_REQ(i)	(0x1000<<(i))
 #define SOCKET_REGION_INFO	0x4000
 #define SOCKET_CARDBUS		0x8000
 #define SOCKET_CARDBUS_CONFIG	0x10000

include/pcmcia/ss.h

@@ -175,7 +175,6 @@ struct pcmcia_socket {
 	u_short				functions;
 	u_short				lock_count;
 	client_handle_t			clients;
-	u_int				real_clients;
 	pccard_mem_map			cis_mem;
 	u_char				*cis_virt;
 	struct config_t			*config;