Remove hover tooltip | WordPress.org

You have to use a hook that either enqueues a CSS file for the admin back end or one that echos an inline style. Try this snippet that does the latter

//Hide WPO PDF Invoices ToolTip on the admin dashboard
add_action('admin_head', 'wpo_wcpdf_hide_admin_tooltip');
function wpo_wcpdf_hide_admin_tooltip() {
  echo '<style>
			#tiptip_holder.tip_bottom {
				display: none !important;
			}
		</style>';
}

If you haven’t worked with code snippets (actions/filters) or functions.php before, read this guide: How to use filters

Thank you for your prompt reply and support @dwpriv

That worked perfectly.

Appreciate your time many thanks