Revert "cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11017)" (#11669)

Temporarily reverting this PR to avoid releasing
half finished featue.

This reverts commit 9e2f58f846.

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

cmd/k8s-operator/deploy/crds/tailscale.com_dnsconfigs.yaml

@@ -1,96 +0,0 @@
-apiVersion: apiextensions.k8s.io/v1
-kind: CustomResourceDefinition
-metadata:
-  annotations:
-    controller-gen.kubebuilder.io/version: v0.13.0
-  name: dnsconfigs.tailscale.com
-spec:
-  group: tailscale.com
-  names:
-    kind: DNSConfig
-    listKind: DNSConfigList
-    plural: dnsconfigs
-    shortNames:
-      - dc
-    singular: dnsconfig
-  scope: Cluster
-  versions:
-    - additionalPrinterColumns:
-        - description: Service IP address of the nameserver
-          jsonPath: .status.nameserverStatus.ip
-          name: NameserverIP
-          type: string
-      name: v1alpha1
-      schema:
-        openAPIV3Schema:
-          type: object
-          required:
-            - spec
-          properties:
-            apiVersion:
-              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
-              type: string
-            kind:
-              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
-              type: string
-            metadata:
-              type: object
-            spec:
-              type: object
-              required:
-                - nameserver
-              properties:
-                nameserver:
-                  type: object
-                  properties:
-                    image:
-                      type: object
-                      properties:
-                        repo:
-                          type: string
-                        tag:
-                          type: string
-            status:
-              type: object
-              properties:
-                conditions:
-                  type: array
-                  items:
-                    description: ConnectorCondition contains condition information for a Connector.
-                    type: object
-                    required:
-                      - status
-                      - type
-                    properties:
-                      lastTransitionTime:
-                        description: LastTransitionTime is the timestamp corresponding to the last status change of this condition.
-                        type: string
-                        format: date-time
-                      message:
-                        description: Message is a human readable description of the details of the last transition, complementing reason.
-                        type: string
-                      observedGeneration:
-                        description: If set, this represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.condition[x].observedGeneration is 9, the condition is out of date with respect to the current state of the Connector.
-                        type: integer
-                        format: int64
-                      reason:
-                        description: Reason is a brief machine readable explanation for the condition's last transition.
-                        type: string
-                      status:
-                        description: Status of the condition, one of ('True', 'False', 'Unknown').
-                        type: string
-                      type:
-                        description: Type of the condition, known values are (`SubnetRouterReady`).
-                        type: string
-                  x-kubernetes-list-map-keys:
-                    - type
-                  x-kubernetes-list-type: map
-                nameserverStatus:
-                  type: object
-                  properties:
-                    ip:
-                      type: string
-      served: true
-      storage: true
-      subresources:
-        status: {}