remove EE-only code

app/models/upload.rb

 class Upload < ActiveRecord::Base
-  prepend EE::Upload
-
   # Upper limit for foreground checksum processing
   CHECKSUM_THRESHOLD = 100.megabytes
 

ee/spec/requests/api/jobs_spec.rb

-require 'spec_helper'
-
-describe API::Jobs do
-  set(:project) do
-    create(:project, :repository, public_builds: false)
-  end
-
-  set(:pipeline) do
-    create(:ci_empty_pipeline, project: project,
-                               sha: project.commit.id,
-                               ref: project.default_branch)
-  end
-
-  let!(:job) { create(:ci_build, :success, pipeline: pipeline) }
-
-  let(:user) { create(:user) }
-  let(:api_user) { user }
-  let(:reporter) { create(:project_member, :reporter, project: project).user }
-  let(:cross_project_pipeline_enabled) { true }
-
-  before do
-    stub_licensed_features(cross_project_pipelines: cross_project_pipeline_enabled)
-    project.add_developer(user)
-  end
-
-  describe 'GET /projects/:id/jobs/:job_id/artifacts' do
-    shared_examples 'downloads artifact' do
-      let(:download_headers) do
-        { 'Content-Transfer-Encoding' => 'binary',
-          'Content-Disposition' => 'attachment; filename=ci_build_artifacts.zip' }
-      end
-
-      it 'returns specific job artifacts' do
-        expect(response).to have_gitlab_http_status(200)
-        expect(response.headers).to include(download_headers)
-        expect(response.body).to match_file(job.artifacts_file.file.file)
-      end
-    end
-
-    context 'authorized by job_token' do
-      let(:job) { create(:ci_build, :artifacts, pipeline: pipeline, user: api_user) }
-
-      before do
-        get api("/projects/#{project.id}/jobs/#{job.id}/artifacts"), job_token: job.token
-      end
-
-      context 'user is developer' do
-        let(:api_user) { user }
-
-        it_behaves_like 'downloads artifact'
-      end
-
-      context 'when anonymous user is accessing private artifacts' do
-        let(:api_user) { nil }
-
-        it 'hides artifacts and rejects request' do
-          expect(project).to be_private
-          expect(response).to have_gitlab_http_status(404)
-        end
-      end
-
-      context 'feature is disabled for EES' do
-        let(:api_user) { user }
-        let(:cross_project_pipeline_enabled) { false }
-
-        it 'disallows access to the artifacts' do
-          expect(response).to have_gitlab_http_status(404)
-        end
-      end
-    end
-  end
-end