Delete the variants/draft code.

Change-Id: I84abfedc30e4c34e42285f3c366c2f504a3b9cf2
Reviewed-on: https://boringssl-review.googlesource.com/c/34144
Commit-Queue: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
diff --git a/ssl/handshake_client.cc b/ssl/handshake_client.cc
index 4d57ae5..e2b1ffe 100644
--- a/ssl/handshake_client.cc
+++ b/ssl/handshake_client.cc
@@ -416,8 +416,6 @@
     return ssl_hs_error;
   }
 
-  // Initialize a random session ID for the experimental TLS 1.3 variant
-  // requiring a session id.
   if (ssl->session != nullptr &&
       !ssl->s3->initial_handshake_complete &&
       ssl->session->session_id_length > 0) {
@@ -425,6 +423,7 @@
     OPENSSL_memcpy(hs->session_id, ssl->session->session_id,
                    hs->session_id_len);
   } else if (hs->max_version >= TLS1_3_VERSION) {
+    // Initialize a random session ID.
     hs->session_id_len = sizeof(hs->session_id);
     if (!RAND_bytes(hs->session_id, hs->session_id_len)) {
       return ssl_hs_error;