drop obsolete definition for MAX_KEXHASHBUF (#65)

The last code to make use of MAX_KEXHASHBUF was removed in 2005:

  https://github.com/mkj/dropbear/commit/736f370dce614b717193f45d084e9e009de723ce

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/kex.h b/kex.h
index 872f98b..03dcbb1 100644
--- a/kex.h
+++ b/kex.h
@@ -106,7 +106,4 @@ struct kex_curve25519_param {
 int curve25519_donna(unsigned char *out, const unsigned char *secret, const unsigned char *other);
 #endif
 
-
-#define MAX_KEXHASHBUF 2000
-
 #endif /* DROPBEAR_KEX_H_ */