fix: remove Lumo props.css import from utility.css (#10123)

Author: web-padawan

packages/vaadin-lumo-styles/utility.css

@@ -3,7 +3,6 @@
  * Copyright (c) 2000 - 2025 Vaadin Ltd.
  * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
  */
-@import './props.css';
 @import './src/utilities/accessibility.css';
 @import './src/utilities/background.css';
 @import './src/utilities/border.css';