remove load_env! as it's made unnecessary by foreman run

lib/foreman.rb

@@ -4,12 +4,6 @@ module Foreman
 
   class AppDoesNotExist < Exception; end
 
-  # load contents of env_file into ENV
-  def self.load_env!(env_file = './.env')
-    require 'foreman/engine'
-    Foreman::Engine.load_env!(env_file)
-  end
-
   def self.runner
     File.expand_path("../../bin/foreman-runner", __FILE__)
   end