Remove old code

Author: jasnell

lib/unicode.js

@@ -67,9 +67,6 @@ if (has_icu) {
     from_enc = normalizeEncoding(from_enc);
     to_enc = normalizeEncoding(to_enc);
 
-    if (from_enc === 'auto')
-      from_enc = normalizeEncoding(exports.detectEncoding(source));
-
     if (from_enc === to_enc)
       return source;
 
@@ -113,8 +110,6 @@ if (has_icu) {
     pos >>>= 0;
 
     encoding = normalizeEncoding(encoding || 'utf8');
-    if (encoding === 'auto')
-      encoding = normalizeEncoding(exports.detectEncoding(buf));
 
     if (encoding === 'binary' || encoding === 'ascii')
       return buf[pos];
@@ -130,8 +125,6 @@ if (has_icu) {
 
     pos >>>= 0;
     encoding = normalizeEncoding(encoding || 'utf8');
-    if (encoding === 'auto')
-      encoding = normalizeEncoding(exports.detectEncoding(buf));
 
     if (encoding === 'binary' || encoding === 'ascii')
       return String.fromCharCode(buf[pos]);
@@ -142,7 +135,6 @@ if (has_icu) {
   };
 
 } else {
-  exports.detectEncoding =
   exports.transcode =
   exports.codePointAt =
   exports.charAt =