removed obsolete code

lib/single-file/modules/css-matched-rules.js

@@ -78,7 +78,7 @@ this.matchedRules = this.matchedRules || (() => {
 	};
 
 	function createMediaInfo(media) {
-		const mediaInfo = { media: media, elements: new Map(), pseudos: new Map(), medias: new Map(), rules: new Map(), pseudoRules: new Map() };
+		const mediaInfo = { media: media, elements: new Map(), medias: new Map(), rules: new Map(), pseudoRules: new Map() };
 		if (media == MEDIA_ALL) {
 			mediaInfo.matchedStyles = new Map();
 		}