What this PR does / why we need it:
This PR removes vendoring from the project, the same way it was done for many other repositories in the Gardener org.
Special notes for your reviewer:
/cc @MrBatschner
Release note:
The `vendor` directory was removed in favor of the `go mod cache`.
How to categorize this PR?
/area open-source /kind enhancement /os garden-linux
What this PR does / why we need it: This PR removes
vendor
ing from the project, the same way it was done for many other repositories in the Gardener org.Special notes for your reviewer: /cc @MrBatschner
Release note: