Remove old process management scripts

diff --git a/script/plugin b/script/plugin
deleted file mode 100755 (executable)
index b82201f..0000000
--- a/script/plugin
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/usr/bin/env ruby
-require File.expand_path('../../config/boot',  __FILE__)
-require 'commands/plugin'