Fix RS storage-first auth work in dev, remove token

See https://github.com/remotestorage/remotestorage.js/issues/900

spec/controllers/services/rs_auths_controller_spec.rb

@@ -31,7 +31,7 @@ RSpec.describe Services::RsAuthsController, type: :controller do
         end
 
         it "redirects to the given URL with the correct RS URL fragment params" do
-          launch_url = "https://app.example.com#remotestorage=#{user.address}&access_token=#{@auth.token}"
+          launch_url = "https://app.example.com#remotestorage=#{user.address}"
           expect(response).to redirect_to(launch_url)
         end
       end