dts: bindings: can: can-fd-controller: remove tx-delay-comp-offset prop

Remove the unused "tx-delay-comp-offset" property from the base CAN FD
controller devicetree binding.

Having a static Transmitter Delay Compensation (TDC) offset is useless.
The offset needs to match the data phase timing parameters in order to
properly configure the second sample point when transmitting CAN FD frames
with BRS enabled.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>