Remove rest of unused variables

I haven't found an elegant way to remove them, but since they were the
only three variables left out of 383 we used to have, I can live with
this low percentage of inelegant solutions.

spec/features/admin/poll/questions/answers/answers_spec.rb

@@ -40,7 +40,7 @@ describe "Answers" do
   scenario "Update" do
     question = create(:poll_question)
     answer = create(:poll_question_answer, question: question, title: "Answer title", given_order: 2)
-    answer2 = create(:poll_question_answer, question: question, title: "Another title", given_order: 1)
+    create(:poll_question_answer, question: question, title: "Another title", given_order: 1)
 
     visit admin_answer_path(answer)
 

spec/features/tags/debates_spec.rb

@@ -168,16 +168,16 @@ describe "Tags" do
     end
 
     scenario "From show" do
-      debate1 = create(:debate, tag_list: "Education")
-      debate2 = create(:debate, tag_list: "Health")
+      debate = create(:debate, tag_list: "Education")
+      create(:debate, tag_list: "Health")
 
-      visit debate_path(debate1)
+      visit debate_path(debate)
 
       click_link "Education"
 
       within("#debates") do
         expect(page).to have_css(".debate", count: 1)
-        expect(page).to have_content(debate1.title)
+        expect(page).to have_content(debate.title)
       end
     end
 

spec/features/tags/proposals_spec.rb

@@ -202,16 +202,16 @@ describe "Tags" do
     end
 
     scenario "From show" do
-      proposal1 = create(:proposal, tag_list: "Education")
-      proposal2 = create(:proposal, tag_list: "Health")
+      proposal = create(:proposal, tag_list: "Education")
+      create(:proposal, tag_list: "Health")
 
-      visit proposal_path(proposal1)
+      visit proposal_path(proposal)
 
       click_link "Education"
 
       within("#proposals") do
         expect(page).to have_css(".proposal", count: 1)
-        expect(page).to have_content(proposal1.title)
+        expect(page).to have_content(proposal.title)
       end
     end