Consolidate system specs into single directory, use rspec tags for configuration (#30206)

lib/tasks/spec.rake

@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-if Rake::Task.task_defined?('spec:system')
-  namespace :spec do
-    task :enable_system_specs do # rubocop:disable Rails/RakeEnvironment
-      ENV['LOCAL_DOMAIN'] = 'localhost:3000'
-      ENV['LOCAL_HTTPS'] = 'false'
-      ENV['RUN_SYSTEM_SPECS'] = 'true'
-    end
-  end
-
-  Rake::Task['spec:system'].enhance ['spec:enable_system_specs']
-end