Merge pull request #15 from hapinessjs/next

Update etcd3.extension.ts

Author: akanass

src/module/etcd3.extension.ts

@@ -12,7 +12,6 @@ import { Observable } from 'rxjs/Observable';
 
 import { Etcd3Manager } from './managers';
 import { Etcd3Config } from './interfaces';
-import { Etcd3 } from '.';
 
 export class Etcd3Ext implements OnExtensionLoad, OnShutdown {