[master] db1b11f rip out a long obsolete comment

[Nils Goroll]

commit db1b11fde12c47eec227af76c7ea751947bfbf17
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Tue Nov 7 11:00:48 2017 +0100

    rip out a long obsolete comment
    
    This should have gone with d9a9ecd999f78123ac6ef5dfa8fd4aac38130c26

diff --git a/bin/varnishd/cache/cache_esi_deliver.c b/bin/varnishd/cache/cache_esi_deliver.c
index 9770315..0d3e451 100644
--- a/bin/varnishd/cache/cache_esi_deliver.c
+++ b/bin/varnishd/cache/cache_esi_deliver.c
@@ -165,11 +165,6 @@ ved_include(struct req *preq, const char *src, const char *host,
 	req->vcl = preq->vcl;
 	preq->vcl = NULL;
 
-	/*
-	 * XXX: We should decide if we should cache the director
-	 * XXX: or not (for session/backend coupling).  Until then
-	 * XXX: make sure we don't trip up the check in vcl_recv.
-	 */
 	req->req_step = R_STP_RECV;
 	req->t_req = preq->t_req;
 	assert(isnan(req->t_first));