refactor: use execSync for tests (#158)

Author: JustinBeckwith

packages/google-cloud-automl/samples/package.json

@@ -1,30 +1,26 @@
 {
   "name": "@google-cloud/automl-samples",
   "description": "Samples for the Cloud AutoML Client Library for Node.js.",
-  "version": "0.0.1",
   "license": "Apache-2.0",
   "author": "Google LLC",
   "engines": {
     "node": ">=8"
   },
+  "files": [
+    "!test/*"
+  ],
   "repository": "googleapis/nodejs-automl",
   "private": true,
-  "nyc": {
-    "exclude": [
-      "**/*.test.js"
-    ]
-  },
   "scripts": {
     "test": "mocha --timeout 600000"
   },
   "dependencies": {
     "@google-cloud/automl": "^0.2.0",
-    "chai": "^4.2.0",
-    "execa": "^1.0.0",
     "mathjs": "^5.5.0",
     "yargs": "^13.2.1"
   },
   "devDependencies": {
-    "mocha": "^6.0.1"
+    "mocha": "^6.0.1",
+    "chai": "^4.2.0"
   }
 }