Rakefile in coco-0.12.0 vs Rakefile in coco-0.13.0

@@ -1,6 +1,4 @@
-# -*- encoding: utf-8 -*-
-
 require 'bundler/gem_tasks'
 require 'rake/dsl_definition'
 require 'rake'
 require 'rspec/core/rake_task'