Remove direct react-test-renderer dependency

Author: wojtekmaj

package.json

@@ -71,8 +71,7 @@
     "jest-cli": "^22.1.4",
     "less": "^2.7.3",
     "react": "^16.2.0",
-    "react-dom": "^16.2.0",
-    "react-test-renderer": "^16.2.0"
+    "react-dom": "^16.2.0"
   },
   "peerDependencies": {
     "react": ">=15.5",

yarn.lock

@@ -3726,7 +3726,7 @@ react-reconciler@^0.7.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react-test-renderer@^16.0.0-0, react-test-renderer@^16.2.0:
+react-test-renderer@^16.0.0-0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.2.0.tgz#bddf259a6b8fcd8555f012afc8eacc238872a211"
   dependencies: