This article goes over how to remove Travis CI from your GitHub’s:

• Personal account
• Organization account
• Repository

Personal

Revoke Travis CI from Account settings > Applications:

In Applications, check if Travis CI is added in:

• Installed GitHub Apps
• Authorized GitHub Apps

Organization

Deny Travis CI access from Organization > Account settings > Third-party access:

In Account settings, check if Travis CI is added in:

• Webhooks
• Installed GitHub Apps

Repository

Config

Delete .travis.yml from your repository root.

Branches

Uncheck Travis CI status checks from your repository Settings > Branches > Branch protection rules:

• Travis CI - Branch
• Travis CI - Pull Request

Don’t forget to save your changes.

Webhooks

Delete Travis CI from your repository Settings > Webhooks:

Travis CI

Finally, don’t forget to change your plan to the free one so you stop paying.