Remove a few HTTP status checks as these are not supported in Selenium

spec/features/projects/environments/environment_spec.rb

@@ -198,7 +198,6 @@ feature 'Environment' do
       end
       it 'renders a correct environment folder' do
-        expect(page).to have_http_status(:ok)
         expect(page).to have_content('Environments / staging-1.0')
       end
     end

spec/features/projects/pipelines/pipelines_spec.rb

@@ -515,7 +515,6 @@ describe 'Pipelines', :js do
       let(:project) { create(:project, :public, :repository) }
       it { expect(page).to have_content 'Build with confidence' }
-      it { expect(page).to have_http_status(:success) }
     end
     context 'when project is private' do