removed obsolete code

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

@@ -119,9 +119,6 @@ this.cssMinifier = this.cssMinifier || (() => {
 					selectorText += ruleSelectorText;
 				}
 			}
-			cssRule.selectorText = selectorText; // needed for images minifier
-			ruleInfo.selectorsText = newSelectorsText;
-			ruleInfo.selectors = newSelectors;
 		}
 		return (selectorText || cssRule.selectorText) + "{" + (styleCssText || cssRule.style.cssText) + "}";
 	}