Remove unused files

infrastructure/hcloud-csi/kustomization.yaml

infrastructure/hcloud-csi/remove-default-annotation.yaml

infrastructure/rook/kustomization.yaml

infrastructure/rook/namespace.yaml

infrastructure/rook/release.yaml

infrastructure/rook/repository.yaml

terraform/.gitignore

terraform/.terraform.lock.hcl

terraform/LICENSE

terraform/Makefile

terraform/README.md

terraform/dns.tf

terraform/firewall.tf

terraform/loadbalancer.tf

terraform/main.tf

terraform/modules/hcloud_instance/main.tf

terraform/modules/hcloud_instance/network.tf

terraform/modules/hcloud_instance/output.tf

terraform/modules/hcloud_instance/variables.tf

terraform/modules/hcloud_instance/versions.tf