don't take into account "font-display" css style when grouping fonts

lib/single-file/css-fonts-minifier.js

@@ -289,7 +289,6 @@ this.fontsMinifier = this.fontsMinifier || (() => {
 			getFontWeight(style.getPropertyValue("font-weight")),
 			style.getPropertyValue("font-style"),
 			style.getPropertyValue("unicode-range"),
-			style.getPropertyValue("font-display"),
 			style.getPropertyValue("font-stretch"),
 			style.getPropertyValue("font-variant"),
 			style.getPropertyValue("font-feature-settings"),