Javascript: remove jszip

Author: yueyuzhao

package.json

@@ -36,7 +36,6 @@
   "dependencies": {
     "intl": "^1.0.1",
     "intl-messageformat": "^1.2.0",
-    "jszip": "^2.5.0",
     "snapsvg": "^0.3.0"
   }
 }

src/tablet/IO.js

@@ -1,6 +1,5 @@
 import OS from './OS';
 import MediaLib from './MediaLib';
-import JSZip from 'jszip';
 import {setCanvasSize, drawThumbnail, gn} from '../utils/lib';
 import Lobby from '../lobby/Lobby';
 import SVG2Canvas from '../utils/SVG2Canvas';