Refs #37148 - Remove removed_widgets override

[jeremylenz]

What are the changes introduced in this pull request?

#10882 removed subscription-related widgets, but we still had some code that refers to them. This code was an override of Foreman's removed_widgets method and is no longer needed.

This is causing the Dashboard page to break with

uninitialized constant SUBSCRIPTION_TEMPLATES
Extracted source (around line #16):

        if Organization.current&.simple_content_access?
          widgets.reject! { |widget| ::Widget.singleton_class::SUBSCRIPTION_TEMPLATES.include? widget[:template] }
        end

        widgets

Rails.root: /home/vagrant/foreman

Application Trace | Framework Trace | Full Trace
/home/vagrant/katello/app/helpers/katello/concerns/dashboard_helper_extensions.rb:16:in `block in removed_widgets'

Considerations taken when implementing this change?

Both of the referenced widgets are removed, so removing this is correct

What are the testing steps for this pull request?

On master: Load the dashboard page. You will get that error.

On this branch: Load the dashboard page. You should get no error.

[m-bucher]

Fixes the issue on my devel-forklift, thanks.

[ianballou]

Works for me! To reproduce, you must have some widgets that are deleted.