app-containers/kubernetes: removing deprecated flag

BUG=b/284337614
TEST=presubmit
RELEASE_NOTE=None

cos-patch: bug
Change-Id: I4cbcf8fd4aef9330449e8d745de460646246cdc4
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/49909
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
diff --git a/project-lakitu/app-emulation/kubernetes/files/default b/project-lakitu/app-emulation/kubernetes/files/default
index ccc3de6..d6e116d 100644
--- a/project-lakitu/app-emulation/kubernetes/files/default
+++ b/project-lakitu/app-emulation/kubernetes/files/default
@@ -1 +1 @@
-KUBELET_OPTS="--container-runtime=remote --container-runtime-endpoint=unix:///run/containerd/containerd.sock --config /etc/kubernetes/kubelet-config.yaml"
+KUBELET_OPTS="--container-runtime-endpoint=unix:///run/containerd/containerd.sock --config /etc/kubernetes/kubelet-config.yaml"