Removing cache and image translation from Hub&Spoke

Now that we are using the cluster's container-runtime to pull images,
maintaining our own cache is redundant since the container runtime
is using its own cache on the nodes.

In addition to that, we had some issue invalidating
cache entries in some cases,
therefore and since we don't need it anymore,
removing it completely simplifies the flow.

We should use the images as mentioned in the ManagedClusterModule.
There is no need for additional manipulations to it.

Author: TomerNewman

cmd/manager-hub/main.go

@@ -18,8 +18,6 @@ package main
 
 import (
 	"flag"
-	"time"
-
 	"github.com/kubernetes-sigs/kernel-module-management/internal/config"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/controllers"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -38,7 +36,6 @@ import (
 	"github.com/kubernetes-sigs/kernel-module-management/api-hub/v1beta1"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/build"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/build/pod"
-	"github.com/kubernetes-sigs/kernel-module-management/internal/cache"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/cluster"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/cmd"
 	"github.com/kubernetes-sigs/kernel-module-management/internal/constants"
@@ -135,14 +132,10 @@ func main() {
 	ctrlLogger.Info("Adding controller")
 
 	operatorNamespace := cmd.GetEnvOrFatalError(constants.OperatorNamespaceEnvVar, setupLogger)
-
-	cache := cache.New[string](10 * time.Minute)
 	ctx := ctrl.SetupSignalHandler()
-	cache.StartCollecting(ctx, 10*time.Minute)
-
 	mcmr := hub.NewManagedClusterModuleReconciler(
 		client,
-		manifestwork.NewCreator(client, scheme, kernelAPI, registryAPI, cache, operatorNamespace),
+		manifestwork.NewCreator(client, scheme, kernelAPI, registryAPI, operatorNamespace),
 		cluster.NewClusterAPI(client, kernelAPI, buildAPI, signAPI, operatorNamespace),
 		statusupdater.NewManagedClusterModuleStatusUpdater(client),
 		filterAPI,
@@ -177,5 +170,4 @@ func main() {
 		cmd.FatalError(setupLogger, err, "problem running manager")
 	}
 
-	cache.WaitForTermination()
 }