remove hoek

package.json

@@ -4,8 +4,7 @@
   "private": true,
   "dependencies": {
     "react": "^16.4.1",
-    "react-dom": "^16.4.1",
-    "hoek": "4.2.1"
+    "react-dom": "^16.4.1"
   },
   "devDependencies": {
     "react-scripts": "1.1.4"

yarn.lock

@@ -69,8 +69,8 @@ ajv@^5.0.0, ajv@^5.1.0, ajv@^5.1.5, ajv@^5.2.0:
     json-schema-traverse "^0.3.0"
 
 ajv@^6.0.1:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.1.tgz#88ebc1263c7133937d108b80c5572e64e1d9322d"
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.2.tgz#678495f9b82f7cca6be248dd92f59bff5e1f4360"
   dependencies:
     fast-deep-equal "^2.0.1"
     fast-json-stable-stringify "^2.0.0"
@@ -3122,10 +3122,6 @@ hmac-drbg@^1.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.1"
 
-hoek@4.2.1:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.1.tgz#9634502aa12c445dd5a7c5734b572bb8738aacbb"
-
 home-or-tmp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"