Revert "Merge"

This reverts commit 84eae6fac9.

spec/models/poll_spec.rb

@@ -29,23 +29,4 @@ describe Poll do
       end
     end
   end
-
-  describe 'validations' do
-    context 'when valid' do
-      let(:poll) { Fabricate.build(:poll) }
-
-      it 'is valid with valid attributes' do
-        expect(poll).to be_valid
-      end
-    end
-
-    context 'when not valid' do
-      let(:poll) { Fabricate.build(:poll, expires_at: nil) }
-
-      it 'is invalid without an expire date' do
-        poll.valid?
-        expect(poll).to model_have_error_on_field(:expires_at)
-      end
-    end
-  end
 end