drivers: can: mcan: remove broken transmitter delay compensation support

Remove broken support for Transmitter Delay Compensation from the Bosch
M_CAN backend driver.

Even if this was enabled via Kconfig, the TDC bit in the DBTP register set
during driver initialization is overwritten in can_mcan_set_timing_data(),
turning TDC off.

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