Extract changing Stripe method selection logic

It will change and it's clearer in a separate method.

app/controllers/spree/admin/payment_methods_controller.rb

@@ -101,12 +101,7 @@ module Spree
       end
 
       def load_data
-        @providers = if Rails.env.dev? || Rails.env.test?
-                       Gateway.providers.sort_by(&:name)
-                     else
-                       Gateway.providers.reject{ |p| p.name.include? "Bogus" }.sort_by(&:name)
-                     end
-        @providers.reject!{ |provider| stripe_provider?(provider) } unless show_stripe?
+        @providers = load_providers
         @calculators = PaymentMethod.calculators.sort_by(&:name)
       end
 
@@ -126,6 +121,20 @@ module Spree
         # rubocop:enable Style/TernaryParentheses
       end
 
+      def load_providers
+        providers = Gateway.providers.sort_by(&:name)
+
+        unless Rails.env.dev? || Rails.env.test?
+          providers.reject! { |provider| provider.name.include? "Bogus" }
+        end
+
+        unless show_stripe?
+          providers.reject! { |provider| stripe_provider?(provider) }
+        end
+
+        providers
+      end
+
       # Show Stripe as an option if enabled, or if the
       # current payment_method is already a Stripe method
       def show_stripe?