sctp: remove the typedef sctp_hostname_param_t

Remove this typedef, there is even no places using it.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/sctp.h

@@ -291,10 +291,10 @@ struct sctp_cookie_preserve_param {
 };
 
 /* Section 3.3.2.1 Host Name Address (11) */
-typedef struct sctp_hostname_param {
+struct sctp_hostname_param {
 	struct sctp_paramhdr param_hdr;
 	uint8_t hostname[0];
-} sctp_hostname_param_t;
+};
 
 /* Section 3.3.2.1 Supported Address Types (12) */
 typedef struct sctp_supported_addrs_param {