ptp_pch: Remove unused pch_pm_ops

The default values for hooks in the driver.pm are NULLs.
Hence drop unused pch_pm_ops.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220207210730.75252-6-andriy.shevchenko@linux.intel.com


Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>