kubeadm: don't warn if crictl binary does not exist

kubeadm does not rely on `crictl` any more, so we can now drop the
warning in 1.32 as outlined in:

kubernetes/kubeadm#3064

Signed-off-by: Sascha Grunert <[email protected]>

Author: saschagrunert

cmd/kubeadm/app/preflight/checks_linux.go

@@ -74,7 +74,6 @@ func addSwapCheck(checks []Checker) []Checker {
 // addExecChecks adds checks that verify if certain binaries are in PATH
 func addExecChecks(checks []Checker, execer utilsexec.Interface) []Checker {
 	checks = append(checks,
-		InPathCheck{executable: "crictl", mandatory: false, exec: execer},
 		InPathCheck{executable: "conntrack", mandatory: true, exec: execer},
 		InPathCheck{executable: "ip", mandatory: true, exec: execer},
 		InPathCheck{executable: "iptables", mandatory: true, exec: execer},