Revert "added dependencies to package.json"

This reverts commit 02fcde1091.

googletrendsgame/package.json

@@ -3,9 +3,6 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "async": "^2.6.0",
-    "google-trends-api": "^4.4.0",
-    "promise": "^8.0.1",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-scripts": "1.1.0",
@@ -17,4 +14,4 @@
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
   }
-}
+}