Remove unused chai-json-equal and chai-subset packages

These were likely only in here because of copy-pasta, so out they go.

package.json

@@ -67,8 +67,6 @@
     "babel-polyfill": "^6.16.0",
     "babel-types": "6.22.0",
     "chai": "3.5.0",
-    "chai-json-equal": "0.0.1",
-    "chai-subset": "1.3.0",
     "eslint": "3.15.0",
     "eslint-plugin-babel": "3.3.0",
     "eslint-plugin-dependencies": "2.0.0",

resources/mocha-bootload.js

@@ -7,11 +7,6 @@
  */
 /* eslint-disable no-console, object-shorthand */
 
-var chai = require('chai');
-
-var chaiSubset = require('chai-subset');
-chai.use(chaiSubset);
-
 process.on('unhandledRejection', function (error) {
   console.error('Unhandled Promise Rejection:');
   console.error(error && error.stack || error);

yarn.lock

@@ -624,14 +624,6 @@ caseless@~0.11.0:
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.11.0.tgz#715b96ea9841593cc33067923f5ec60ebda4f7d7"
 
-chai-json-equal@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/chai-json-equal/-/chai-json-equal-0.0.1.tgz#338fcbbdaec63349379c7c4278c8a28da3b141a1"
-
-chai-subset@1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/chai-subset/-/chai-subset-1.3.0.tgz#456ac33f98d2506431885fab175078f50b7cc75e"
-
 chai@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/chai/-/chai-3.5.0.tgz#4d02637b067fe958bdbfdd3a40ec56fef7373247"