There, there, Google Calendar

Disables alerts in Google Calendar and redirects them to the console (Requires Settings > Notifications to be unchecked)

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "version": "0.1.2",
  "name": "There, there, Google Calendar",
  "description": "Disables alerts in Google Calendar and redirects them to the console (Requires Settings > Notifications to be unchecked)",
  "content_scripts": [
    {
      "matches": [
        "https://calendar.google.com/*"
      ],
      "js": [
        "main.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "main.js"
  ],
  "icons": {
    "128": "icon128.png",
    "512": "icon512.png"
  }
}