tun.h: Remove non-existent tun_decaps()

Change-Id: If9cc5d2d54b87e38feefa55cb9410715fa9bd11f
---
M lib/tun.h
1 file changed, 0 insertions(+), 1 deletion(-)

diff --git a/lib/tun.h b/lib/tun.h
index 544e56a..a6b6181 100644
--- a/lib/tun.h
+++ b/lib/tun.h
@@ -47,7 +47,6 @@
 
 extern int tun_new(struct tun_t **tun, const char *dev_name, bool use_kernel, int fd0, int fd1u);
 extern int tun_free(struct tun_t *tun);
-extern int tun_decaps(struct tun_t *this);
 extern int tun_encaps(struct tun_t *tun, void *pack, unsigned len);
 
 extern int tun_addaddr(struct tun_t *this, struct in46_addr *addr, size_t prefixlen);

