chore: remove v1alpha1 member cluster placement controller (#299)

* remove v1alpha1 member cluster placement controller

Signed-off-by: Wei Weng <Wei.Weng@microsoft.com>

* add a test back

Signed-off-by: Wei Weng <Wei.Weng@microsoft.com>

---------

Signed-off-by: Wei Weng <Wei.Weng@microsoft.com>
Co-authored-by: Wei Weng <Wei.Weng@microsoft.com>

Author: weng271190436

cmd/hubagent/workload/setup.go

@@ -37,7 +37,6 @@ import (
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/clusterinventory/clusterprofile"
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/clusterresourceplacementeviction"
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/clusterresourceplacementstatuswatcher"
-	"github.com/kubefleet-dev/kubefleet/pkg/controllers/memberclusterplacement"
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/overrider"
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/placement"
 	"github.com/kubefleet-dev/kubefleet/pkg/controllers/placementwatcher"
@@ -70,8 +69,7 @@ const (
 
 	resourceChangeControllerName = "resource-change-controller"
 
-	schedulerQueueName        = "scheduler-queue"
-	mcPlacementControllerName = "memberCluster-placement-controller"
+	schedulerQueueName = "scheduler-queue"
 )
 
 var (
@@ -175,14 +173,6 @@ func SetupControllers(ctx context.Context, wg *sync.WaitGroup, mgr ctrl.Manager,
 	rateLimiter := options.DefaultControllerRateLimiter(opts.RateLimiterOpts)
 	var clusterResourcePlacementControllerV1Beta1 controller.Controller
 	var resourcePlacementController controller.Controller
-	var memberClusterPlacementController controller.Controller
-	if opts.EnableV1Alpha1APIs {
-		klog.Info("Setting up member cluster change controller")
-		mcp := &memberclusterplacement.Reconciler{
-			InformerManager: dynamicInformerManager,
-		}
-		memberClusterPlacementController = controller.NewController(mcPlacementControllerName, controller.NamespaceKeyFunc, mcp.Reconcile, rateLimiter)
-	}
 
 	if opts.EnableV1Beta1APIs {
 		for _, gvk := range v1Beta1RequiredGVKs {
@@ -512,7 +502,6 @@ func SetupControllers(ctx context.Context, wg *sync.WaitGroup, mgr ctrl.Manager,
 		ClusterResourcePlacementControllerV1Beta1: clusterResourcePlacementControllerV1Beta1,
 		ResourcePlacementController:               resourcePlacementController,
 		ResourceChangeController:                  resourceChangeController,
-		MemberClusterPlacementController:          memberClusterPlacementController,
 		InformerManager:                           dynamicInformerManager,
 		ResourceConfig:                            resourceConfig,
 		SkippedNamespaces:                         skippedNamespaces,