fix(old metamark styles): delete old metamark styles

scenarios/xslt/edxml2html/css/styles.css

@@ -115,18 +115,6 @@ hr.metamark-line::before {
     color: var(--theme-color);
 }
 
-/*hr.metamark-line::before {
-    content: "metamark";
-}
-
-hr.metamark-line[data-rend]::before {
-    content: attr(data-rend);
-}
-
-hr.metamark-line[data-rend='doubleLine']::before {
-    content: "Double Line";
-}*/
-
 hr.metamark-line {
     display: block;
     background-color:white;