Remore charkick gem and dependencies

Gemfile

@@ -33,7 +33,6 @@ gem "recaptcha", require: "recaptcha/rails"
 gem 'ckeditor'
 
 gem 'ahoy_matey'  # stats
-gem "chartkick"   # charts
 gem 'groupdate'   # group temporary data
 
 group :development, :test do

Gemfile.lock

@@ -85,7 +85,6 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    chartkick (1.3.2)
     ckeditor (4.1.2)
       cocaine
       orm_adapter (~> 0.5.0)
@@ -324,7 +323,6 @@ DEPENDENCIES
   capistrano-rails (= 1.1.3)
   capistrano-rvm
   capybara
-  chartkick
   ckeditor
   coffee-rails (~> 4.1.0)
   coveralls

app/views/layouts/application.html.erb

@@ -8,7 +8,6 @@
         <%= stylesheet_link_tag    "application" %>
         <%= javascript_include_tag "vendor/modernizr" %>
         <%= javascript_include_tag "application", 'data-turbolinks-track' => true %>
-        <%= javascript_include_tag "//www.google.com/jsapi", "chartkick" %>
         <%= csrf_meta_tags %>
         <script src="https://www.google.com/recaptcha/api.js?hl=<%= I18n.locale %>"></script>
     </head>