CLDC-1487 Do not show duplicate page header (#1180)

if identical to question header

app/models/form/sales/pages/buyer1_previous_tenure.rb

@@ -2,7 +2,6 @@ class Form::Sales::Pages::Buyer1PreviousTenure < ::Form::Page
   def initialize(id, hsh, subsection)
     super
     @id = "buyer1_previous_tenure"
-    @header = "What was buyer 1's previous tenure?"
   end
 
   def questions

spec/models/form/sales/pages/buyer1_previous_tenure_spec.rb

@@ -20,6 +20,6 @@ RSpec.describe Form::Sales::Pages::Buyer1PreviousTenure, type: :model do
   end
 
   it "has the correct header" do
-    expect(page.header).to eq("What was buyer 1's previous tenure?")
+    expect(page.header).to be_nil
   end
 end