Reduce mocha timeout

Author: lgeiger

package.json

@@ -28,8 +28,8 @@
   "scripts": {
     "install": "prebuild --install",
     "build:docs": "jsdoc -R README.md -d docs lib/*.js",
-    "test": "mocha --expose-gc --slow 300 --timeout 4000",
-    "test:electron": "electron-mocha --slow 300 --timeout 4000",
+    "test": "mocha --expose-gc --slow 300",
+    "test:electron": "electron-mocha --slow 300",
     "precoverage": "nyc npm run test",
     "coverage": "nyc report --reporter=text-lcov > coverage.lcov && codecov"
   },