Remove long-dead comment.

clang-format keeps getting annoyed at it. Also remove some long-dead
constants.

Change-Id: I61e773f5be1e60ca28f1ea085e3afa7cb2c97b9e
Reviewed-on: https://boringssl-review.googlesource.com/6778
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/internal.h b/ssl/internal.h
index 2c46f5c..5e3dd09 100644
--- a/ssl/internal.h
+++ b/ssl/internal.h
@@ -686,16 +686,7 @@
  * signatures. */
 #define SSL_USE_SIGALGS(s) (s->enc_method->enc_flags & SSL_ENC_FLAG_SIGALGS)
 
-/* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
- * 	    <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
- * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
- * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
- * SSL_aRSA <- RSA_ENC | RSA_SIGN
- * SSL_aDSS <- DSA_SIGN */
-
 /* From RFC4492, used in encoding the curve type in ECParameters */
-#define EXPLICIT_PRIME_CURVE_TYPE 1
-#define EXPLICIT_CHAR2_CURVE_TYPE 2
 #define NAMED_CURVE_TYPE 3
 
 enum ssl_hash_message_t {