refactor: drop repo-tool as an exec wrapper (#35)

packages/google-cloud-oslogin/.circleci/config.yml

@@ -71,7 +71,6 @@ jobs:
           command: |-
             mkdir -p /home/node/.npm-global
             npm install
-            chmod +x node_modules/@google-cloud/nodejs-repo-tools/bin/tools
           environment:
             NPM_CONFIG_PREFIX: /home/node/.npm-global
       - run:

packages/google-cloud-oslogin/package.json

@@ -36,16 +36,16 @@
     "greenkeeper[bot] <greenkeeper[bot]@users.noreply.github.com>"
   ],
   "scripts": {
-    "test": "repo-tools test run --cmd npm -- run cover",
+    "test": "npm run cover",
     "generate-scaffolding": "repo-tools generate all",
     "generate-scaffolding-samples": "repo-tools generate lib_samples_readme -l samples/ --config ../.cloud-repo-tools.json",
     "cover": "nyc --reporter=lcov mocha --require intelli-espower-loader test/*.js && nyc report",
     "samples-test": "cd samples/ && npm link ../ && npm test && cd ../",
-    "test-no-cover": "repo-tools test run --cmd mocha -- test/*.js --no-timeouts",
-    "lint": "repo-tools lint --cmd eslint -- src/ samples/ system-test/ test/ smoke-test/",
-    "prettier": "repo-tools exec -- prettier --write src/*.js src/*/*.js samples/*.js samples/*/*.js test/*.js test/*/*.js system-test/*.js system-test/*/*.js smoke-test/*.js",
-    "docs": "repo-tools exec -- jsdoc -c .jsdoc.js",
-    "system-test": "repo-tools test run --cmd mocha -- system-test/*.js smoke-test/*.js --timeout 600000"
+    "test-no-cover": "mocha test/*.js --no-timeouts",
+    "lint": "eslint src/ samples/ system-test/ test/ smoke-test/",
+    "prettier": "prettier --write src/*.js src/*/*.js samples/*.js samples/*/*.js test/*.js test/*/*.js system-test/*.js system-test/*/*.js smoke-test/*.js",
+    "docs": "jsdoc -c .jsdoc.js",
+    "system-test": "mocha system-test/*.js smoke-test/*.js --timeout 600000"
   },
   "dependencies": {
     "google-gax": "^0.16.0",