Remove system: username check

Signed-off-by: David Kwon <[email protected]>

pkg/webhook/validatingwebhook/validate_k8simagepuller_request.go

@@ -5,7 +5,6 @@ import (
 	"html"
 	"io"
 	"net/http"
-	"strings"
 
 	toolchainv1alpha1 "github.com/codeready-toolchain/api/api/v1alpha1"
 
@@ -51,11 +50,6 @@ func (v K8sImagePullerRequestValidator) validate(body []byte) []byte {
 		log.Error(err, "unable to deserialize the admission review object", "body", escapedBody)
 		return denyAdmissionRequest(admReview, errors.Wrapf(err, "unable to deserialize the admission review object - body: %v", escapedBody))
 	}
-	requestingUsername := admReview.Request.UserInfo.Username
-	// allow admission request if the user is a system user
-	if strings.HasPrefix(requestingUsername, "system:") {
-		return allowAdmissionRequest(admReview)
-	}
 	//check if the requesting user is a sandbox user
 	requestingUser := &userv1.User{}
 	err := v.Client.Get(context.TODO(), types.NamespacedName{