lftp: migrate to boneyard (#4956)

Formula/lftp.rb

@@ -1,30 +0,0 @@
-class Lftp < Formula
-  desc "Sophisticated file transfer program"
-  homepage "https://lftp.yar.ru/"
-  # Can't get 4.7.x to build on OS X/macOS. Pull requests welcome!
-  # https://github.com/Homebrew/homebrew-core/pull/1509
-  url "https://lftp.yar.ru/ftp/lftp-4.6.6.tar.xz"
-  sha256 "d6215e9bff744f29383fb11c61262b7545b2b5a551e1011e85f428669506d05c"
-
-  bottle do
-    sha256 "cd676764c5ffbe88ba8b0b52889e4ee97de90abb222753ee67d55724087c3ff5" => :sierra
-    sha256 "3ccbe19f080a4b4956a2f4e56a2c9d1faa49a58801765e20bc0dd494a6cfa6af" => :el_capitan
-    sha256 "df2056435819a12a1c49f5402e49ab1d3ad3da4de8d751f788d0f6844d4ac63b" => :yosemite
-    sha256 "586dddd1efa0af036d051f9105e1c3ae838c198ced3b572f5c9e14d349fbbcd0" => :mavericks
-  end
-
-  depends_on "pkg-config" => :build
-  depends_on "readline"
-  depends_on "openssl"
-
-  def install
-    system "./configure", "--disable-dependency-tracking",
-                          "--prefix=#{prefix}",
-                          "--with-openssl=#{Formula["openssl"].opt_prefix}"
-    system "make", "install"
-  end
-
-  test do
-    system bin/"lftp", "-c", "open ftp://mirrors.kernel.org; ls"
-  end
-end

tap_migrations.json

@@ -154,6 +154,7 @@
   "kumofs": "homebrew/boneyard",
   "lastfmlib": "homebrew/boneyard",
   "latex-mk": "homebrew/tex",
+  "lftp": "homebrew/boneyard",
   "libdbusmenu-qt": "homebrew/boneyard",
   "libdlna": "homebrew/boneyard",
   "libgtextutils": "homebrew/science",