fix: remove repo-tools dependencies (GoogleCloudPlatform#1824)

Author: sofisl

functions/concepts/package.json

@@ -15,7 +15,6 @@
  "node-fetch": "^2.6.0"
  },
  "devDependencies": {
- "@google-cloud/nodejs-repo-tools": "^3.3.0",
  "mocha": "^7.0.0",
  "sinon": "^9.0.0",
  "supertest": "^4.0.0"

functions/scheduleinstance/package.json

@@ -15,7 +15,6 @@
  "test": "mocha test/*.test.js --timeout=20000"
  },
  "devDependencies": {
- "@google-cloud/nodejs-repo-tools": "^3.3.0",
  "mocha": "^7.0.0",
  "proxyquire": "^2.0.0",
  "sinon": "^9.0.0"