conformance: Remove already delted option RestClient

The below PR remove RestClient option in suite.Options, but the same is
not remove in Conformance Profile file, probably it's overlooked because
of the build tag (e.g. experiment).

Relates: #2241
Signed-off-by: Tam Mach <[email protected]>

Author: sayboras

conformance/experimental_conformance_test.go

@@ -104,7 +104,6 @@ func testExperimentalConformance(t *testing.T) {
 		suite.ExperimentalConformanceOptions{
 			Options: suite.Options{
 				Client:     mgrClient,
-				RESTClient: k8sClientset.CoreV1().RESTClient().(*rest.RESTClient),
 				RestConfig: cfg,
 				// This clientset is needed in addition to the client only because
 				// controller-runtime client doesn't support non CRUD sub-resources yet (https://github.com/kubernetes-sigs/controller-runtime/issues/452).