Remove card number and fix tests

app/models/form/sales/questions/housing_benefits.rb

@@ -8,7 +8,6 @@ class Form::Sales::Questions::HousingBenefits < ::Form::Question
     @page = page
     @hint_text = ""
     @answer_options = ANSWER_OPTIONS
-    @check_answers_card_number = 1
   end
 
   ANSWER_OPTIONS = {

spec/factories/sales_log.rb

@@ -86,6 +86,7 @@ FactoryBot.define do
       relat4 { "P" }
       relat5 { "P" }
       relat6 { "P" }
+      hb { 4 }
     end
   end
 end

spec/models/form/sales/questions/housing_benefits_spec.rb

@@ -44,8 +44,4 @@ RSpec.describe Form::Sales::Questions::HousingBenefits, type: :model do
       "4" => { "value" => "Don’t know " },
     })
   end
-
-  it "has the correct check_answers_card_number" do
-    expect(question.check_answers_card_number).to eq(1)
-  end
 end