net: enetc: remove standardized counters from enetc_pm_counters

net: enetc: remove standardized counters from enetc_pm_counters

The standardized counters are already exposed via the get_pause_stats(),
get_rmon_stats(), get_eth_ctrl_stats() and get_eth_mac_stats()
interfaces. Keeping the same counters in enetc_pm_counters results in
redundant output.

Remove these standardized counters from enetc_pm_counters and rely on
the existing statistics interfaces to report them.

Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20260408055849.1314033-4-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>