if omniauth is enabled and if there are button_based_providers available show…

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

@@ -109,16 +109,17 @@
           = f.label :signin_enabled do
             = f.check_box :signin_enabled
             Sign-in enabled
-    .form-group
-      = f.label :disable_oauth_signin_sources, 'Disable OAuth Sign-In sources', class: 'control-label col-sm-2'
-      .col-sm-10
-        - data_attrs = { toggle: 'buttons' }
-        .btn-group{ data: data_attrs }
-          - oauth_providers_checkboxes('oauth-providers-help').each do |source|
-            = source
-        %span.help-block#oauth-providers-help
-          Enabled OmniAuth must be configured for GitHub
-          = link_to "(?)", help_page_path("integration", "github")
+      - if omniauth_enabled? && !button_based_providers.empty?
+        .form-group
+          = f.label :disable_oauth_signin_sources, 'Disable OAuth Sign-In sources', class: 'control-label col-sm-2'
+          .col-sm-10
+            - data_attrs = { toggle: 'buttons' }
+            .btn-group{ data: data_attrs }
+              - oauth_providers_checkboxes('oauth-providers-help').each do |source|
+                = source
+            %span.help-block#oauth-providers-help
+              Enabled OmniAuth must be configured for GitHub
+              = link_to "(?)", help_page_path("integration", "github")
     .form-group
       = f.label :two_factor_authentication, 'Two-factor authentication', class: 'control-label col-sm-2'
       .col-sm-10