Remove redundant form assignments from sections

app/models/form/sales/sections/finances.rb

@@ -4,7 +4,6 @@ class Form::Sales::Sections::Finances < ::Form::Section
     @id = "finances"
     @label = "Finances"
     @description = ""
-    @form = form
     @subsections = [
       Form::Sales::Subsections::IncomeBenefitsAndSavings.new(nil, nil, self),
     ]

app/models/form/sales/sections/household.rb

@@ -4,7 +4,6 @@ class Form::Sales::Sections::Household < ::Form::Section
     @id = "household"
     @label = "About the household"
     @description = ""
-    @form = form
     @subsections = [
       Form::Sales::Subsections::HouseholdCharacteristics.new(nil, nil, self),
       Form::Sales::Subsections::HouseholdSituation.new(nil, nil, self),

app/models/form/sales/sections/property_information.rb

@@ -4,7 +4,6 @@ class Form::Sales::Sections::PropertyInformation < ::Form::Section
     @id = "property_information"
     @label = "Property information"
     @description = ""
-    @form = form
     @subsections = [Form::Sales::Subsections::PropertyInformation.new(nil, nil, self)] || []
   end
 end

app/models/form/sales/sections/sale_information.rb

@@ -4,7 +4,6 @@ class Form::Sales::Sections::SaleInformation < ::Form::Section
     @id = "sale_information"
     @label = "Sale information"
     @description = ""
-    @form = form
     @subsections = [
       Form::Sales::Subsections::SharedOwnershipScheme.new(nil, nil, self),
       Form::Sales::Subsections::DiscountedOwnershipScheme.new(nil, nil, self),

app/models/form/sales/sections/setup.rb

@@ -4,7 +4,6 @@ class Form::Sales::Sections::Setup < ::Form::Section
     @id = "setup"
     @label = "Before you start"
     @description = ""
-    @form = form
     @subsections = [Form::Sales::Subsections::Setup.new(nil, nil, self)] || []
   end
 end