fix(module): rem "module" from package.json

Fixes #482

Author: STRML

package.json

@@ -3,7 +3,6 @@
   "version": "4.4.1",
   "description": "React draggable component",
   "main": "build/cjs/cjs.js",
-  "module": "build/module/Draggable.js",
   "scripts": {
     "test": "make test",
     "test-phantom": "make test-phantom",