Revert "ANDROID: cpuset: Make cpusets restore on hotplug"

This reverts commit c8dc4422.  It causes
merge conflicts with 6.1-rc1.  If this is still needed in 6.1, it can
come back after 6.1-rc1 is merged.

Bug: 174125747
Bug: 120444281
Cc: Dmitry Shmidt <dimitrysh@google.com>
Cc: Amit Pundir <amit.pundir@linaro.org>
Cc: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8b040cf6ba360aad710eb462aabf76d87e803b23