GravityView - Don't turn hidden fields into text fields in Edit Entry

gravityview-keep-hidden-fields-hidden.php

<?php

add_action( 'gravityview_edit_entry', 'gravityview_dont_show_hidden_fields', 20 );

/**
 * Don't turn hidden fields into text fields in GravityView Edit Entry
 */
function gravityview_dont_show_hidden_fields() {

	if( ! class_exists('GravityView_Fields' ) ) {
		return;
	}

	$Field = GravityView_Fields::get('hidden');

	if ( $Field ) {
		remove_filter( 'gravityview/edit_entry/form_fields', array( $Field, 'edit_entry_fix_hidden_fields' ) );
	}

}