remove unused method

Author: vladak

opengrok-web/src/main/java/org/opengrok/web/PageConfig.java

@@ -1856,15 +1856,6 @@ public boolean isNotModified(HttpServletRequest request, HttpServletResponse res
         );
     }
 
-    /**
-     * @param root root path
-     * @param path path
-     * @return path relative to root
-     */
-    public static String getRelativePath(String root, String path) {
-        return Paths.get(root).relativize(Paths.get(path)).toString();
-    }
-
     /**
      * Determines whether a match offset from a search result has been indicated,
      * and if so tries to calculate a translated xref fragment identifier.