Retire now-unused M_XDATA.

Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D33993

sys/opencrypto/xform.c

@@ -69,8 +69,6 @@ __FBSDID("$FreeBSD$");
 #include <opencrypto/cryptodev.h>
 #include <opencrypto/xform.h>
 
-MALLOC_DEFINE(M_XDATA, "xform", "xform data buffers");
-
 /* Include the encryption algorithms */
 #include "xform_null.c"
 #include "xform_aes_cbc.c"

sys/opencrypto/xform.h

@@ -42,8 +42,4 @@
 #include <opencrypto/xform_comp.h>
 #include <opencrypto/xform_enc.h>
 
-#ifdef _KERNEL
-#include <sys/malloc.h>
-MALLOC_DECLARE(M_XDATA);
-#endif
 #endif /* _CRYPTO_XFORM_H_ */