kramdown-rfc2629: 1.3.37 -> 1.4.1 and move to rubyPackages (#117283)

pkgs/tools/text/kramdown-rfc2629/Gemfile

@@ -1,2 +0,0 @@
-source 'https://rubygems.org'
-gem 'kramdown-rfc2629'

pkgs/tools/text/kramdown-rfc2629/Gemfile.lock

@@ -1,19 +0,0 @@
-GEM
-  remote: https://rubygems.org/
-  specs:
-    certified (1.0.0)
-    json_pure (2.5.1)
-    kramdown (1.17.0)
-    kramdown-rfc2629 (1.3.37)
-      certified (~> 1.0)
-      json_pure (~> 2.0)
-      kramdown (~> 1.17.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  kramdown-rfc2629
-
-BUNDLED WITH
-   2.1.4

pkgs/tools/text/kramdown-rfc2629/default.nix

@@ -1,18 +0,0 @@
-{ lib, bundlerApp }:
-
-# Not in the default ../../../development/ruby-modules/with-packages/Gemfile
-# because of version clash on the "kramdown" dependency.
-bundlerApp rec {
-  pname = "kramdown-rfc2629";
-  gemdir = ./.;
-  exes = [ "kramdown-rfc2629" ];
-
-  meta = with lib; {
-    description = "A markdown parser with multiple backends";
-    homepage    = "https://github.com/cabo/kramdown-rfc2629";
-    license     = with licenses; mit;
-    maintainers = with maintainers; [
-      vcunat # not really, but I expect to use it occasionally around IETF
-    ];
-  };
-}

pkgs/tools/text/kramdown-rfc2629/gemset.nix

@@ -1,43 +0,0 @@
-{
-  certified = {
-    groups = ["default"];
-    platforms = [];
-    source = {
-      remotes = ["https://rubygems.org"];
-      sha256 = "1706p6p0a8adyvd943af2a3093xakvislgffw3v9dvp7j07dyk5a";
-      type = "gem";
-    };
-    version = "1.0.0";
-  };
-  json_pure = {
-    groups = ["default"];
-    platforms = [];
-    source = {
-      remotes = ["https://rubygems.org"];
-      sha256 = "030hmc268wchqsccbjk41hvbyg99krpa72i3q0y3wwqzfh8hi736";
-      type = "gem";
-    };
-    version = "2.5.1";
-  };
-  kramdown = {
-    groups = ["default"];
-    platforms = [];
-    source = {
-      remotes = ["https://rubygems.org"];
-      sha256 = "1n1c4jmrh5ig8iv1rw81s4mw4xsp4v97hvf8zkigv4hn5h542qjq";
-      type = "gem";
-    };
-    version = "1.17.0";
-  };
-  kramdown-rfc2629 = {
-    dependencies = ["certified" "json_pure" "kramdown"];
-    groups = ["default"];
-    platforms = [];
-    source = {
-      remotes = ["https://rubygems.org"];
-      sha256 = "16m08q5bgib3i54bb9p3inrxb1xksiybs9zj1rnncq492gcqqv4j";
-      type = "gem";
-    };
-    version = "1.3.37";
-  };
-}