Remove sassc-rails dependency

Rakefile

@@ -43,23 +43,6 @@ task :test_all_gemfiles do
   end
 end
 
-desc 'Dumps output to a CSS file for testing'
-task :debug do
-  require 'sassc'
-  require './lib/bootstrap'
-  require 'term/ansicolor'
-  require 'autoprefixer-rails'
-  path = Bootstrap.stylesheets_path
-  %w(_bootstrap _bootstrap-reboot _bootstrap-grid).each do |file|
-    engine = SassC::Engine.new(File.read("#{path}/#{file}.scss"), syntax: :scss, load_paths: [path])
-    out = File.join('tmp', "#{file[1..-1]}.css")
-    css = engine.render
-    css = AutoprefixerRails.process(css)
-    File.write(out, css)
-    $stderr.puts Term::ANSIColor.green "Compiled #{out}"
-  end
-end
-
 desc 'Update bootstrap from upstream'
 task :update, :branch do |t, args|
   require './tasks/updater'

bootstrap.gemspec

@@ -11,12 +11,10 @@ Gem::Specification.new do |s|
   s.homepage = 'https://github.com/twbs/bootstrap-rubygem'
   s.license  = 'MIT'
 
-  # SassC requires Ruby 2.3.3. Also specify here to make it obvious.
   s.required_ruby_version = '>= 2.3.3'
 
   s.add_runtime_dependency 'popper_js', '>= 1.14.3', '< 2'
 
-  s.add_runtime_dependency 'sassc-rails', '>= 2.0.0'
   s.add_runtime_dependency 'autoprefixer-rails', '>= 9.1.0'
 
   # Testing dependencies

lib/bootstrap/engine.rb

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require 'autoprefixer-rails'
-require 'sassc-rails'
 
 module Bootstrap
   module Rails