rmlint: fix build without patch

pkgs/tools/misc/rmlint/blkid-hack.patch

@@ -1,18 +0,0 @@
-# HACK: For some reason the file blkid/blkid.h is not found during build.
-# I assueme it is due to the fact that -I [...]util-linux-2.33-dev/include/blkid
-# is added during the build and not just   -I [...]util-linux-2.33-dev/include
-# For the time being this patch is the only way I could find to fix the build.
-
-diff --git a/lib/utilities.c b/lib/utilities.c
-index e768fa41..1f96fd68 100644
---- a/lib/utilities.c
-+++ b/lib/utilities.c
-@@ -76,7 +76,7 @@
- #endif
- 
- #if HAVE_BLKID
--#include <blkid/blkid.h>
-+#include <blkid.h>
- #endif
- 
- #if HAVE_JSON_GLIB

pkgs/tools/misc/rmlint/default.nix

@@ -1,5 +1,6 @@
-{ stdenv, fetchFromGitHub,
-  gettext, glib, json-glib, libelf, pkgconfig, scons, sphinx, utillinux }:
+{ stdenv, fetchFromGitHub
+, gettext, pkgconfig, scons
+, glib, json-glib, libelf, sphinx, utillinux }:
 
 with stdenv.lib;
 stdenv.mkDerivation rec {
@@ -13,13 +14,15 @@ stdenv.mkDerivation rec {
     sha256 = "1gc7gbnh0qg1kl151cv1ld87vhpm1v3pnkn7prhscdcc21jrg8nz";
   };
 
+  CFLAGS="-I${stdenv.lib.getDev utillinux}/include";
 
-  patches = [
-    ./blkid-hack.patch
+  nativeBuildInputs = [
+    pkgconfig sphinx gettext scons
   ];
 
-  nativeBuildInputs = [ pkgconfig sphinx ];
-  buildInputs = [ gettext glib json-glib libelf scons utillinux ];
+  buildInputs = [
+    glib json-glib libelf utillinux
+  ];
 
   prefixKey = "--prefix=";