Removing the browser field for now

This is picked up in Webpack by default and will cause all sorts of headaches. Fixes #2345

Author: timdorr

package.json

@@ -2,7 +2,6 @@
   "name": "redux",
   "version": "3.6.0",
   "description": "Predictable state container for JavaScript apps",
-  "browser": "dist/redux.js",
   "main": "lib/index.js",
   "module": "es/index.js",
   "jsnext:main": "es/index.js",