Revert "net: ethernet: ti: am65-cpsw: add mqprio qdisc offload in channel mode"

This reverts commit 90bc21aa.

Patch was merged too hastily, Vladimir requested changes in:
https://lore.kernel.org/all/20230816121305.5dio5tk3chge2ndh@skbuf/



Signed-off-by: Jakub Kicinski <kuba@kernel.org>