ioping: 1.2 -> 1.3

Remove netdata patch that was never merged upstream (PR #41 was closed)
and no longer applies to v1.3.

https://github.com/koct9i/ioping/releases/tag/v1.3

pkgs/by-name/io/ioping/package.nix

@@ -2,28 +2,19 @@
   lib,
   stdenv,
   fetchFromGitHub,
-  fetchpatch,
 }:
 
 stdenv.mkDerivation rec {
   pname = "ioping";
-  version = "1.2";
+  version = "1.3";
 
   src = fetchFromGitHub {
     owner = "koct9i";
     repo = "ioping";
     rev = "v${version}";
-    sha256 = "10bv36bqga8sdifxzywzzpjil7vmy62psirz7jbvlsq1bw71aiid";
+    hash = "sha256-9lJEjns8ttjgI52ZXeWgL77GMd7o7IvefBJ5UH9y9ks=";
   };
 
-  patches = [
-    # add netdata support: https://github.com/koct9i/ioping/pull/41
-    (fetchpatch {
-      url = "https://github.com/koct9i/ioping/commit/e7b818457ddb952cbcc13ae732ba0328f6eb73b3.patch";
-      sha256 = "122ivp4rqsnjszjfn33z8li6glcjhy7689bgipi8cgs5q55j99gf";
-    })
-  ];
-
   makeFlags = [ "PREFIX=$(out)" ];
 
   meta = with lib; {