Remove unimplemented encoding types

diff --git a/index.js b/index.js
index 0845da6250e5f3e8ed550e8e4ff12bb836458257..950aca901ff1ca27b3ef53aced6b5535bc51d985 100644 (file)
--- a/index.js
+++ b/index.js
@@ -101,10 +101,6 @@ Buffer.isEncoding = function(encoding) {
     case 'ascii':
     case 'binary':
     case 'base64':
-    case 'ucs2':
-    case 'ucs-2':
-    case 'utf16le':
-    case 'utf-16le':
     case 'raw':
       return true