Prune some dead constants.

Change-Id: Ie0d664ba01b152769185267d2d5c78320ca01473
Reviewed-on: https://boringssl-review.googlesource.com/14684
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

include/openssl/ssl3.h

@@ -294,12 +294,6 @@ OPENSSL_COMPILE_ASSERT(
 #define SSL3_AD_INAPPROPRIATE_FALLBACK 86 /* fatal */
 
 #define SSL3_CT_RSA_SIGN 1
-#define SSL3_CT_DSS_SIGN 2
-#define SSL3_CT_RSA_FIXED_DH 3
-#define SSL3_CT_DSS_FIXED_DH 4
-#define SSL3_CT_RSA_EPHEMERAL_DH 5
-#define SSL3_CT_DSS_EPHEMERAL_DH 6
-#define SSL3_CT_FORTEZZA_DMS 20
 
 /* SSLv3 */
 /* client */