Remove gcp test package

[mrodm]

Remove gcp package and references in the cloud-cleanup pipeline/scripts.

Terraform deployer is already tested by some aws test packages (aws, aws_logs...). And currently, gcp package in the integrations repository is not using this deployer:

• https://github.com/elastic/integrations/tree/0d873745d2e0636d3804fe7cb5ec4b065a034003/packages/gcp/_dev/deploy/docker

[mrodm]

/test

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 28c33b8

History

• 💛 Build #3507 was flaky 28c33b8

cc @mrodm