can: tcan4x5x: remove regmap async support

The driver doesn't use regmap async support, so remove the stubs.

Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-8-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2020-12-16 00:17:37 +01:00
commit b9c30ef344