Remove character-data, directive support

Author: wooorm

lib/character-data.js

@@ -16,10 +16,6 @@ handlers.doctype = require('./doctype');
 handlers.comment = require('./comment');
 handlers.raw = require('./raw');
 
-/* Deprecated */
-handlers.directive = require('./directive');
-handlers.characterData = require('./character-data');
-
 /* Stringify `node`. */
 function one(ctx, node, index, parent) {
   var type = node && node.type;

lib/directive.js

@@ -14,7 +14,3 @@ require('./attribute');
 require('./omission');
 require('./omission-opening');
 require('./omission-closing');
-
-/* Legacy. */
-require('./character-data');
-require('./directive');