Notice: unregister_setting was called with an argument that is deprecate

In class-eazyest-extra-fields.php:412

unregister_setting( 'eazyest-gallery', 'eazyest-fields', array( $this, 'sanitize_settings' ) );

Should be replaced with

unregister_setting( 'eazyest-gallery', 'eazyest-fields' );