brew-aspell-dictionaries: move to homebrew/core.

Experiment with moving this from Homebrew/brew to Homebrew/homebrew-core
(to allow future additions of formula-specific `cmd`s).

Library/Homebrew/dev-cmd/aspell-dictionaries.rb

@@ -1,47 +0,0 @@
-#: @hide_from_man_page
-#:  * `aspell_dictionaries`:
-#:    Generates the new dictionaries for the `aspell` formula.
-
-require "open-uri"
-require "resource"
-require "formula"
-
-module Homebrew
-  module_function
-
-  def aspell_dictionaries
-    dict_url    = "https://ftpmirror.gnu.org/aspell/dict"
-    dict_mirror = "https://ftp.gnu.org/gnu/aspell/dict"
-    languages   = {}
-
-    open("#{dict_url}/0index.html") do |content|
-      content.each_line do |line|
-        break if %r{^</table} =~ line
-        next unless /^<tr><td><a/ =~ line
-
-        fields = line.split('"')
-        lang = fields[1]
-        path = fields[3]
-        lang.tr!("-", "_")
-        languages[lang] = path
-      end
-    end
-
-    languages.each do |lang, path|
-      r = Resource.new(lang)
-      r.owner = Formulary.factory("aspell")
-      r.url "#{dict_url}/#{path}"
-      r.mirror "#{dict_mirror}/#{path}"
-      r.fetch
-      puts <<-EOS
-        option "with-lang-#{r.name}", "Install #{r.name} dictionary"
-        resource "#{r.name}" do
-          url "#{r.url}"
-          mirror "#{r.mirrors.first}"
-          sha256 "#{r.cached_download.sha256}"
-        end
-
-      EOS
-    end
-  end
-end