chore(doc-gen): update dgeni-packages to 0.10.18

0.10.18 has fixed the `@private` tag so this is not needed locally any more

docs/docs-package/index.js

@@ -48,8 +48,6 @@ module.exports = new Package('angular-v2-docs', [jsdocPackage, nunjucksPackage,
 
 
 .config(function(parseTagsProcessor, getInjectables) {
-  parseTagsProcessor.tagDefinitions.push(require('./tag-defs/private'));
-
   // We actually don't want to parse param docs in this package as we are getting the data out using TS
   parseTagsProcessor.tagDefinitions.forEach(function(tagDef) {
     if (tagDef.name === 'param') {

docs/docs-package/tag-defs/private.js

@@ -1,4 +0,0 @@
-module.exports = {
-  name: 'private',
-  transforms: function(doc, tag) { return true; }
-};