ISTWCMS-3904: Remove default "contact" form

uw_sites_all.install

@@ -31,6 +31,9 @@ function uw_sites_all_install() {
   // Set it as the admin theme.
   $config = \Drupal::service('config.factory')->getEditable('system.theme');
   $config->set('admin', 'uw_theme_admin')->save();
+
+  // Remove default "contact" form.
+  \Drupal::entityTypeManager()->getStorage('webform')->load('contact')->delete();
 }
 
 /**