Fix Rubocop offenses

Author: MrSerth

spec/concerns/lti_spec.rb

@@ -216,7 +216,7 @@ class Controller < AnonymousController
           end
 
           context 'when submission is after late deadline' do
-            let(:score_sent) { score * 0 }
+            let(:score_sent) { 0 }
 
             before do
               allow(submission).to receive_messages(before_deadline?: false,
@@ -226,7 +226,7 @@ class Controller < AnonymousController
 
             it 'returns deadline and reduced score' do
               expect(send_scores[:deadline]).to eq(:after_late_deadline)
-              expect(send_scores[:score][:sent]).to eq(score * 0)
+              expect(send_scores[:score][:sent]).to eq(0)
             end
 
             it 'sends the reduced score' do

spec/system/score_system_spec.rb

@@ -114,7 +114,7 @@
 
     shared_context 'when scored after late deadline' do
       let(:deadline) { :after_late_deadline }
-      let(:score_sent) { score * 0 }
+      let(:score_sent) { 0 }
     end
 
     context 'when the LTI outcome service is supported' do