Remove unused test with confetti_post_signup candidate

ee/spec/features/registrations/user_sees_new_onboarding_flow_spec.rb

@@ -42,45 +42,4 @@ RSpec.describe 'User sees new onboarding flow', :js do
     expect(page).to have_content('Learn GitLab')
     expect(page).to have_content('GitLab is better with colleagues!')
   end
-
-  context 'with confetti_post_signup experiment candidate experience', :experiment do
-    before do
-      stub_experiments(combined_registration: :control,
-                       confetti_post_signup: :candidate)
-    end
-
-    it 'shows continuous onboarding flow pages with celebration invite modal' do
-      sign_in(create(:user))
-      visit users_sign_up_welcome_path
-
-      expect(page).to have_content('Welcome to GitLab')
-
-      choose 'Just me'
-      click_on 'Continue'
-
-      expect(page).to have_content('Create your group')
-
-      fill_in 'group_name', with: 'test'
-
-      expect(page).to have_field('group_path', with: 'test')
-
-      click_on 'Create group'
-
-      expect(page).to have_content('Create/import your first project')
-
-      fill_in 'project_name', with: 'test'
-
-      expect(page).to have_field('project_path', with: 'test')
-
-      click_on 'Create project'
-
-      expect(page).to have_content('Get started with GitLab')
-
-      Sidekiq::Worker.drain_all
-      click_on "Ok, let's go"
-
-      expect(page).to have_content('Learn GitLab')
-      expect(page).to have_content('GitLab is better with colleagues!')
-    end
-  end
 end