CLEANUP: http-ana: Remove the unused function http_send_name_header()

Because the HTTP multiplexers are now responsible to handle the option
"http-send-name-header", the function http_send_name_header() can be removed.
diff --git a/include/proto/http_ana.h b/include/proto/http_ana.h
index 66895f4..a0db643 100644
--- a/include/proto/http_ana.h
+++ b/include/proto/http_ana.h
@@ -47,7 +47,6 @@
 void http_res_set_status(unsigned int status, const char *reason, struct stream *s);
 void http_check_request_for_cacheability(struct stream *s, struct channel *req);
 void http_check_response_for_cacheability(struct stream *s, struct channel *res);
-int http_send_name_header(struct stream *s, struct proxy *be, const char *srv_name);
 void http_perform_server_redirect(struct stream *s, struct stream_interface *si);
 void http_server_error(struct stream *s, struct stream_interface *si, int err, int finst, const struct buffer *msg);
 void http_reply_and_close(struct stream *s, short status, struct buffer *msg);
diff --git a/src/http_ana.c b/src/http_ana.c
index b5089d1..7095657 100644
--- a/src/http_ana.c
+++ b/src/http_ana.c
@@ -4314,36 +4314,6 @@
 	}
 }
 
-/* send a server's name with an outgoing request over an established connection.
- * Note: this function is designed to be called once the request has been
- * scheduled for being forwarded. This is the reason why the number of forwarded
- * bytes have to be adjusted.
- */
-int http_send_name_header(struct stream *s, struct proxy *be, const char *srv_name)
-{
-	struct htx *htx;
-	struct http_hdr_ctx ctx;
-	struct ist hdr;
-	uint32_t data;
-
-	hdr = ist2(be->server_id_hdr_name, be->server_id_hdr_len);
-	htx = htxbuf(&s->req.buf);
-	data = htx->data;
-
-	ctx.blk = NULL;
-	while (http_find_header(htx, hdr, &ctx, 1))
-		http_remove_header(htx, &ctx);
-	http_add_header(htx, hdr, ist2(srv_name, strlen(srv_name)));
-
-	if (co_data(&s->req)) {
-		if (data >= htx->data)
-			c_rew(&s->req, data - htx->data);
-		else
-			c_adv(&s->req, htx->data - data);
-	}
-	return 0;
-}
-
 /*
  * In a GET, HEAD or POST request, check if the requested URI matches the stats uri
  * for the current backend.