[Toolset] Hide Trash Button

functions.php

<?php 
// hide toolset trash button for relationship CPT
add_action('admin_head', 'ching_admin_css');
function ching_admin_css() {
  echo '<style>
    .wp-admin.post-type-recipe .toolset-listing-wrapper .wp-list-table .row-actions .delete {
		display: none;
	}
  </style>';
}