net: amt: Remove generic .ndo_get_stats64

Commit 3e2f544dd8a33 ("net: get stats64 if device if driver is
configured") moved the callback to dev_get_tstats64() to net core, so,
unless the driver is doing some custom stats collection, it does not
need to set .ndo_get_stats64.

Since this driver is now relying in NETDEV_PCPU_STAT_TSTATS, then, it
doesn't need to set the dev_get_tstats64() generic .ndo_get_stats64
function pointer.

Signed-off-by: Breno Leitao <[e-mail]>
Reviewed-by: Taehee Yoo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/amt.c

···
 	.ndo_open		= amt_dev_open,
 	.ndo_stop		= amt_dev_stop,
 	.ndo_start_xmit         = amt_dev_xmit,
-	.ndo_get_stats64        = dev_get_tstats64,
 };
 
 static void amt_link_setup(struct net_device *dev)