gant: migrating to boneyard

Closes Homebrew/homebrew#43326.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Formula/gant.rb

@@ -1,46 +0,0 @@
-require "formula"
-
-class Gant < Formula
-  desc "Tool for scripting ant"
-  homepage "http://gant.codehaus.org/"
-  url "http://dist.codehaus.org/gant/distributions/gant-1.9.11-_groovy-2.3.0.zip"
-  version "1.9.11"
-  sha1 "5601db2f5001de16b856330abec7b58e1fbf4779"
-
-  depends_on "groovy"
-
-  def install
-    rm_f Dir["bin/*.bat"]
-    # gant-starter.conf is found relative to bin
-    libexec.install %w[bin lib conf]
-
-    ENV["GANT_HOME"] = libexec
-    bin.install libexec/"bin/gant"
-    bin.env_script_all_files(libexec+"bin", :GANT_HOME => ENV["GANT_HOME"])
-  end
-
-  test do
-    (testpath/"build.gant").write <<-EOS.undent
-      includeTargets << gant.targets.Clean
-      cleanPattern << ['**/*~',  '**/*.bak']
-      cleanDirectory << 'build'
-
-      target(stuff: 'A target to do some stuff.') {
-        println 'Stuff'
-        depends clean
-        echo message: 'A default message from Ant.'
-        otherStuff()
-      }
-
-      target(otherStuff: 'A target to do some other stuff') {
-        println 'OtherStuff'
-        echo message: 'Another message from Ant.'
-        clean()
-      }
-
-      setDefaultTarget stuff
-    EOS
-    output = `#{bin}/gant`.strip
-    assert_match /BUILD SUCCESSFUL/, output
-  end
-end