remove unused rootpattern, leftover from commit

9a5ab4e2c1 (diff-d2b184283abed53ae260fc9eabdaef40)

source/net/yacy/cora/document/id/DigestURL.java

@@ -243,7 +243,7 @@ public class DigestURL extends MultiProtocolURL implements Serializable {
 
         // find rootpath
         final String normalizedPath;
-        if (this.isFile() && this.path.indexOf('\\') > -1) // for file protocol normalize path to java notation
+        if (this.isFile() && this.path.indexOf('\\') >= 0) // for file protocol normalize path to java notation
             normalizedPath = this.path.replace('\\','/'); // replace possible Windows pathseparator
         else
             normalizedPath = this.path;
@@ -297,7 +297,6 @@ public class DigestURL extends MultiProtocolURL implements Serializable {
         return Base64Order.enhancedCoder.encode(Digest.encodeMD5Raw(sb.toString())).charAt(0);
     }
 
-    public final static Pattern rootPattern = Pattern.compile("/|/\\?|/index.htm(l?)|/index.php|/home.htm(l?)|/home.php|/default.htm(l?)|/default.php");
 
     private static final String hosthash5(final String protocol, final String host, final int port) {
         if (host == null) {