Revert "kubelet: use static CPU manager policy by default"

[gthao313]

This reverts commit 227640c.

Description of changes:
Revert this change since it triggers failed to start kubelet during migration.

error

Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal kubelet[3496]: I0407 19:44:44.416175    3496 state_mem.go:36] [cpumanager] initializing new in-memory state store
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal kubelet[3496]: E0407 19:44:44.417137    3496 container_manager_linux.go:329] failed to initialize cpu manager: could not initialize checkpoint manager: could not restore state from checkpoint: configured policy "static" differs from state checkpoint policy "none"
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal kubelet[3496]: Please drain this node and delete the CPU manager checkpoint file "/var/lib/kubelet/cpu_manager_state" before restarting Kubelet.
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal kubelet[3496]: F0407 19:44:44.417153    3496 server.go:273] failed to run Kubelet: could not initialize checkpoint manager: could not restore state from checkpoint: configured policy "static" differs from state checkpoint policy "none"
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal kubelet[3496]: Please drain this node and delete the CPU manager checkpoint file "/var/lib/kubelet/cpu_manager_state" before restarting Kubelet.
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal systemd[1]: kubelet.service: Main process exited, code=exited, status=255/EXCEPTION
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal systemd[1]: kubelet.service: Failed with result 'exit-code'.
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal systemd[1]: Failed to start Kubelet.
Apr 07 19:44:44 ip-192-168-85-94.us-west-2.compute.internal systemd[1]: Reached target Multi-User System.

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.