Remove unused dependency

Author: nickpeihl

package.json

@@ -30,7 +30,6 @@
     "@babel/plugin-proposal-class-properties": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
     "babel-jest": "^24.9.0",
-    "expect.js": "^0.3.1",
     "jest": "^24.9.0"
   }
 }

yarn.lock

@@ -1598,11 +1598,6 @@ expand-brackets@^2.1.4:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
-expect.js@^0.3.1:
-  version "0.3.1"
-  resolved "https://registry.yarnpkg.com/expect.js/-/expect.js-0.3.1.tgz#b0a59a0d2eff5437544ebf0ceaa6015841d09b5b"
-  integrity sha1-sKWaDS7/VDdUTr8M6qYBWEHQm1s=
-
 expect@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/expect/-/expect-24.9.0.tgz#b75165b4817074fa4a157794f46fe9f1ba15b6ca"