Remove React from react-tools package

All of this is provided by the react package now, so there's no point in having
it available in multiple places. We *may* go back on that in the future for
shipping test utils, but for the time being, this is better for all.

Author: zpao

main.js

@@ -1,11 +1,9 @@
 'use strict';
 
-var React = require('./build/modules/React');
 var visitors = require('./vendor/fbtransform/visitors').transformVisitors;
 var transform = require('jstransform').transform;
 
 module.exports = {
-  React: React,
   transform: function(code) {
     return transform(visitors.react, code).code;
   }

package.json

@@ -19,7 +19,6 @@
     "README.md",
     "main.js",
     "bin/jsx",
-    "build/modules/",
     "src/",
     "vendor/fbtransform/",
     "vendor/constants.js"