Remove SSL_CIPHER_has_MD5_HMAC.

It has no more callers.

Change-Id: I587ccb3b63810ed167febf7a65ba85106d17a300
Reviewed-on: https://boringssl-review.googlesource.com/13911
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

include/openssl/ssl.h

diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index e284068..3131539 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -1160,9 +1160,6 @@
  * mode). */
 OPENSSL_EXPORT int SSL_CIPHER_is_AES(const SSL_CIPHER *cipher);
 
-/* SSL_CIPHER_has_MD5_HMAC returns zero. */
-OPENSSL_EXPORT int SSL_CIPHER_has_MD5_HMAC(const SSL_CIPHER *cipher);
-
 /* SSL_CIPHER_has_SHA1_HMAC returns one if |cipher| uses HMAC-SHA1. */
 OPENSSL_EXPORT int SSL_CIPHER_has_SHA1_HMAC(const SSL_CIPHER *cipher);
 

ssl/ssl_cipher.c

diff --git a/ssl/ssl_cipher.c b/ssl/ssl_cipher.c
index 52ea804..4a7459f 100644
--- a/ssl/ssl_cipher.c
+++ b/ssl/ssl_cipher.c
@@ -1421,10 +1421,6 @@
   return (cipher->algorithm_enc & SSL_AES) != 0;
 }
 
-int SSL_CIPHER_has_MD5_HMAC(const SSL_CIPHER *cipher) {
-  return 0;
-}
-
 int SSL_CIPHER_has_SHA1_HMAC(const SSL_CIPHER *cipher) {
   return (cipher->algorithm_mac & SSL_SHA1) != 0;
 }