Revert "FEATURE: Normalize the service worker route (#8359)"

This reverts commit 9799a651b6.

lib/tasks/assets.rake

@@ -68,19 +68,6 @@ task 'assets:precompile:css' => 'environment' do
   end
 end
 
-task 'assets:flush_sw' => 'environment' do
-  begin
-    hostname = Discourse.current_hostname
-    default_port = SiteSetting.force_https? ? 443 : 80
-    port = SiteSetting.port.to_i > 0 ? SiteSetting.port : default_port
-    STDERR.puts "Flushing service worker script"
-    `curl -s -m 1 --resolve '#{hostname}:#{port}:127.0.0.1' #{Discourse.base_url}/service-worker.js > /dev/null`
-    STDERR.puts "done"
-  rescue
-    STDERR.puts "Warning: unable to flush service worker script"
-  end
-end
-
 def assets_path
   "#{Rails.root}/public/assets"
 end