Duplicate line of bower import
Duplicate line of bower import

Removed duplicate line of bower import
 ```javascript
bower install --save PolymerElements/paper-drawer-panel
```
Polymer/polymer-element-catalog,googlearchive/polymer-element-catalog,wonderweblabs/polymer-element-catalog,googlearchive/polymer-element-catalog,googlearchive/polymer-element-catalog,wonderweblabs/polymer-element-catalog,Polymer/polymer-element-catalog,Polymer/polymer-element-catalog,wonderweblabs/polymer-element-catalog