Remove quickfix.

This is a pure library that can build with or without Boost,
but does not build against newer versions of Boost.

Nothing else in Homebrew depends on this library, so remove.
Users of this library will have to decide whether or not they want
to use Boost.

Closes Homebrew/homebrew#14135.

Formula/quickfix.rb

@@ -1,16 +0,0 @@
-require 'formula'
-
-class Quickfix < Formula
-  homepage 'http://www.quickfixengine.org/index.html'
-  url 'http://downloads.sourceforge.net/project/quickfix/quickfix/1.13.3/quickfix-1.13.3.tar.gz'
-  sha1 '8a20894a9320206beaeee11c3967dced8b8d2fc0'
-
-  def install
-    system "./configure", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}",
-                          "--with-java"
-    system "make"
-    ENV.j1 # failed otherwise
-    system "make install"
-  end
-end