Cleanup (remove unnecessary code)

spec/features/admin/feature_flags_spec.rb

@@ -8,11 +8,6 @@ feature "Admin feature flags" do
     login_as(create(:administrator).user)
   end
 
-  after do
-    Setting["feature.spending_proposals"] = nil
-    Setting["feature.spending_proposal_features.voting_allowed"] = nil
-  end
-
   scenario "Enabled features are listed on menu" do
     visit admin_root_path