Use 'set' to top-level variables. Remove repository.

spec/requests/api/pipeline_schedules_spec.rb

 require 'spec_helper'
 
 describe API::PipelineSchedules do
-  let(:developer) { create(:user) }
-  let(:user) { create(:user) }
-  let!(:project) { create(:project, :repository) }
+  set(:developer) { create(:user) }
+  set(:user) { create(:user) }
+  set(:project) { create(:project) }
 
   before do
     project.add_developer(developer)