no need to define the help block since there's no help block

app/helpers/application_settings_helper.rb

@@ -61,7 +61,7 @@ module ApplicationSettingsHelper
     end
   end
 
-  def oauth_providers_checkboxes(help_block_id)
+  def oauth_providers_checkboxes
     button_based_providers.map do |source|
       disabled = current_application_settings.disabled_oauth_sign_in_sources.include?(source.to_s)
       css_class = 'btn'
@@ -70,8 +70,7 @@ module ApplicationSettingsHelper
 
       label_tag(checkbox_name, class: css_class) do
         check_box_tag(checkbox_name, source, !disabled,
-                      autocomplete: 'off',
-                      'aria-describedby' => help_block_id) + Gitlab::OAuth::Provider.label_for(source)
+                      autocomplete: 'off') + Gitlab::OAuth::Provider.label_for(source)
       end
     end
   end

app/views/admin/application_settings/_form.html.haml

@@ -114,7 +114,7 @@
         = f.label :enabled_oauth_sign_in_sources, 'Enabled OAuth Sign-In sources', class: 'control-label col-sm-2'
         .col-sm-10
           .btn-group{ data: { toggle: 'buttons' } }
-            - oauth_providers_checkboxes('oauth-providers-help').each do |source|
+            - oauth_providers_checkboxes.each do |source|
               = source
     .form-group
       = f.label :two_factor_authentication, 'Two-factor authentication', class: 'control-label col-sm-2'