gnu: knot: Update to 2.8.1.

* gnu/packages/dns.scm (knot): Update to 2.8.1.
[source]: Remove patch.
* gnu/packages/patches/knot-include-system-lmdb-header.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu/local.mk

@@ -949,7 +949,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/kio-search-smbd-on-PATH.patch		\
   %D%/packages/patches/kmod-module-directory.patch		\
   %D%/packages/patches/kmscon-runtime-keymap-switch.patch	\
-  %D%/packages/patches/knot-include-system-lmdb-header.patch	\
   %D%/packages/patches/kpackage-allow-external-paths.patch	\
   %D%/packages/patches/kobodeluxe-paths.patch			\
   %D%/packages/patches/kobodeluxe-enemies-pipe-decl.patch	\

gnu/packages/dns.scm

@@ -569,16 +569,14 @@ Extensions} (DNSSEC).")
 (define-public knot
   (package
     (name "knot")
-    (version "2.8.0")
+    (version "2.8.1")
-    (source (origin
+    (source
+     (origin
        (method url-fetch)
        (uri (string-append "https://secure.nic.cz/files/knot-dns/"
                            "knot-" version ".tar.xz"))
        (sha256
-               (base32
+        (base32 "1im2wb8hl394mzni1wavmvfqd7il8s28kcz8w3s4v05nbhzg06xj"))
-                "1vw7xx7bm440jwrpvdd04vrp6ccz2b11swcn9msvs62hf0kdjjj9"))
-              (patches
-               (search-patches "knot-include-system-lmdb-header.patch"))
        (modules '((guix build utils)))
        (snippet
         '(begin

gnu/packages/patches/knot-include-system-lmdb-header.patch

@@ -1,34 +0,0 @@
-From: Tobias Geerinckx-Rice <me@tobias.gr>
-Date: Wed, 20 Mar 2019 00:08:00 +0100
-Subject: [PATCH] gnu: knot: Include system <lmdb.h>.
-
-Copied verbatim from Knot master[0].
-
-[0]: https://gitlab.labs.nic.cz/knot/knot-dns/commit/b557430cffbb1c6b30617a394b02acc514e7e536
-
-From b557430cffbb1c6b30617a394b02acc514e7e536 Mon Sep 17 00:00:00 2001
-From: Daniel Salzman <daniel.salzman@nic.cz>
-Date: Wed, 6 Mar 2019 17:35:44 +0100
-Subject: [PATCH] journal: include proper header <lmdb.h>
-
-fixes #638
----
- src/knot/journal/knot_lmdb.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/knot/journal/knot_lmdb.h b/src/knot/journal/knot_lmdb.h
-index 35a88845c..b1d09cbb4 100644
---- a/src/knot/journal/knot_lmdb.h
-+++ b/src/knot/journal/knot_lmdb.h
-@@ -16,7 +16,7 @@
- 
- #pragma once
- 
--#include "contrib/lmdb/lmdb.h"
-+#include <lmdb.h>
- 
- #include <stdbool.h>
- #include <stdlib.h>
--- 
-2.18.1
-