maint: Remove unused coffeescript gem

Author: sman591

Gemfile

@@ -18,7 +18,7 @@ gem 'uglifier', '>= 1.3.0'
 # gem 'mini_racer', platforms: :ruby
 
 # Use CoffeeScript for .coffee assets and views
-gem 'coffee-rails', '~> 4.2'
+# gem 'coffee-rails', '~> 4.2'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
 gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder

Gemfile.lock

@@ -108,13 +108,6 @@ GEM
     codeclimate-test-reporter (0.6.0)
       simplecov (>= 0.7.1, < 1.0.0)
     coderay (1.1.2)
-    coffee-rails (4.2.2)
-      coffee-script (>= 2.2.0)
-      railties (>= 4.0.0)
-    coffee-script (2.4.1)
-      coffee-script-source
-      execjs
-    coffee-script-source (1.12.2)
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
     crack (0.4.3)
@@ -471,7 +464,6 @@ DEPENDENCIES
   chartkick (~> 3.0)
   chromedriver-helper
   codeclimate-test-reporter (~> 0.6.0)
-  coffee-rails (~> 4.2)
   devise (~> 4.2)
   devise-doorkeeper
   doorkeeper (~> 5.0)