Hide conferences choices for 2020

[tea-n-biccies]

Hides conference preferences in Team creation/edit screen of Teams App as not offered for 2020

[Montana]

//.page-header
    //h3 Conference Offers
    //.conference-info
      | Please select one or more conferences free tickets to which you would like to offer to the students.
   // fieldset
      = f.simple_fields_for :conference_attendances do |c|
        = c.input :conference_id, collection: @conferences&.group_by(&:region), as: :grouped_select, group_method: :last, label: "Offered conference", include_blank: "None"
        = c.input :orga_comment, label: "Comment"

      .form-group.form-btn-group
      = f.link_to_add 'Add another conference offer', :conference_attendances, class: 'btn btn-primary col-sm-offset-3'

  //.actions
    ul.list-inline
      li = f.submit 'Save', class: 'btn btn-success'
      li = link_to 'Cancel', [:organizers, @team], class: 'btn btn-default'

This successfully commented out the Conference section in http://localhost:3000/organizers/teams/new.

This will also comment it out under the "teams" view

 //- if can?(:update_conference_preferences, @team)
    = render 'conference_preference_fields', f: f
  //.actions
    ul.list-inline
      li  = f.submit 'Save', class: 'btn btn-success'
      li = link_to 'Cancel', @team, class: 'btn btn-default'

Hope this helps.