Cleanup the hack/tools folder (#427)

Author: mkumatag

hack/tools/conversion-verifier/doc.go

@@ -3,21 +3,15 @@ module sigs.k8s.io/cluster-api-provider-ibmcloud/hack/tools
 go 1.16
 
 require (
-	github.com/blang/semver v3.5.1+incompatible
 	github.com/drone/envsubst/v2 v2.0.0-20210730161058-179042472c46
 	github.com/golangci/golangci-lint v1.41.1
-	github.com/hashicorp/go-multierror v1.1.1
 	github.com/itchyny/gojq v0.12.5
 	github.com/joelanford/go-apidiff v0.1.0
 	github.com/onsi/ginkgo v1.16.5
-	github.com/pkg/errors v0.9.1
-	golang.org/x/tools v0.1.8-0.20211029000441-d6a9af8af023
 	gotest.tools/gotestsum v1.6.4
 	k8s.io/code-generator v0.23.0-alpha.4
-	k8s.io/klog/v2 v2.30.0
 	sigs.k8s.io/cluster-api/hack/tools v0.0.0-20211118171502-aafa086da595
 	sigs.k8s.io/controller-runtime/tools/setup-envtest v0.0.0-20211110210527-619e6b92dab9
 	sigs.k8s.io/controller-tools v0.7.1-0.20211110210727-ab52f76cc7d1
-	sigs.k8s.io/kubebuilder/docs/book/utils v0.0.0-20211028165026-57688c578b5d
 	sigs.k8s.io/kustomize/kustomize/v3 v3.10.0
 )