chore/Remove Rebel Energy banner [CP-965]

When Rebel Energy went bust a few months ago a banner was added to the
CSR table to provide additional advice to customers affected.  We are
now ready to remove the banner

Author: KPobeeNorris

app/components/csr_table/content/rebel_energy_bust_banner_component.html.haml

@@ -1,5 +1,3 @@
-= render CsrTable::Content::RebelEnergyBustBannerComponent.new(supplier: @supplier, current_country: current_country)
-
 %h1.cads-page-title
   Compare energy suppliers' customer service
 

app/components/csr_table/content/rebel_energy_bust_banner_component.rb

@@ -1,5 +1,3 @@
-= render CsrTable::Content::RebelEnergyBustBannerComponent.new(supplier: @supplier, current_country: @current_country)
-
 .supplier-detail-page
   %h1.cads-page-title
     #{supplier.name} customer service

app/views/csr_table/suppliers/index.html.haml

@@ -42,12 +42,6 @@
     trait :low_ranking do
       rank { 999 }
     end
-
-    trait :rebel_energy do
-      id { "rebel-energy" }
-      name { "Rebel Energy" }
-      slug { "rebel-energy" }
-    end
   end
 
   factory :supplier, class: "Supplier" do
@@ -72,9 +66,5 @@
     trait(:low_ranking) do
       data factory: %i[supplier_data ranked low_ranking]
     end
-
-    trait(:rebel_energy) do
-      data factory: %i[supplier_data ranked rebel_energy]
-    end
   end
 end