Fix EmptyLineAfterFinalLetItBe offenses in spec/models/concerns

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/325836

.rubocop_manual_todo.yml

@@ -1158,8 +1158,6 @@ RSpec/EmptyLineAfterFinalLetItBe:
     - spec/models/ci/stage_spec.rb
     - spec/models/clusters/kubernetes_namespace_spec.rb
     - spec/models/commit_spec.rb
-    - spec/models/concerns/batch_destroy_dependent_associations_spec.rb
-    - spec/models/concerns/featurable_spec.rb
     - spec/models/deploy_token_spec.rb
     - spec/models/deployment_spec.rb
     - spec/models/diff_viewer/server_side_spec.rb

spec/models/concerns/batch_destroy_dependent_associations_spec.rb

@@ -26,6 +26,7 @@ RSpec.describe BatchDestroyDependentAssociations do
     let_it_be(:project) { create(:project) }
     let_it_be(:build) { create(:ci_build, project: project) }
     let_it_be(:notification_setting) { create(:notification_setting, project: project) }
+
     let!(:todos) { create(:todo, project: project) }
 
     it 'destroys multiple builds' do

spec/models/concerns/featurable_spec.rb

@@ -4,6 +4,7 @@ require 'spec_helper'
 
 RSpec.describe Featurable do
   let_it_be(:user) { create(:user) }
+
   let(:project) { create(:project) }
   let(:feature_class) { subject.class }
   let(:features) { feature_class::FEATURES }