Don't make SSL_MODE_*HELLO_TIME configurable.

Never send the time as a client. Always send it as a server.

Change-Id: I20c55078cfe199d53dc002f6ee5dd57060b086d5
Reviewed-on: https://boringssl-review.googlesource.com/4829
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index 662077b..789abbd 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -610,7 +610,8 @@
     /* If resending the ClientHello in DTLS after a HelloVerifyRequest, don't
      * renegerate the client_random. The random must be reused. */
     if ((!SSL_IS_DTLS(s) || !s->d1->send_cookie) &&
-        !ssl_fill_hello_random(s, 0, p, sizeof(s->s3->client_random))) {
+        !ssl_fill_hello_random(p, sizeof(s->s3->client_random),
+                               0 /* client */)) {
       goto err;
     }