Remove null creationTimestamp metadata

This tickles a bug in kustomize: kubernetes-sigs/kustomize#5031 (comment)

Author: james-callahan

config/crd/bases/elbv2.k8s.aws_ingressclassparams.yaml

@@ -4,7 +4,6 @@ kind: CustomResourceDefinition
 metadata:
   annotations:
     controller-gen.kubebuilder.io/version: v0.11.1
-  creationTimestamp: null
   name: ingressclassparams.elbv2.k8s.aws
 spec:
   group: elbv2.k8s.aws

config/crd/bases/elbv2.k8s.aws_targetgroupbindings.yaml

@@ -4,7 +4,6 @@ kind: CustomResourceDefinition
 metadata:
   annotations:
     controller-gen.kubebuilder.io/version: v0.11.1
-  creationTimestamp: null
   name: targetgroupbindings.elbv2.k8s.aws
 spec:
   group: elbv2.k8s.aws

config/rbac/role.yaml

@@ -2,7 +2,6 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
-  creationTimestamp: null
   name: controller-role
 rules:
 - apiGroups:

config/webhook/manifests.yaml

@@ -2,7 +2,6 @@
 apiVersion: admissionregistration.k8s.io/v1
 kind: MutatingWebhookConfiguration
 metadata:
-  creationTimestamp: null
   name: webhook
 webhooks:
   - admissionReviewVersions:
@@ -67,7 +66,6 @@ webhooks:
 apiVersion: admissionregistration.k8s.io/v1
 kind: ValidatingWebhookConfiguration
 metadata:
-  creationTimestamp: null
   name: webhook
 webhooks:
   - admissionReviewVersions: