Revert "3724 kstat reports idle time as io_wait, kernel as pio_wait, etc"

This reverts commit 5918f984c877663f045498a174106df2e489ab55.
Revert "3727 british people can't spell"

This reverts commit 539b310fd13067a2dda25ce72b6b4b6beb09cc37.
3727 british people can't spell