can: rockchip_canfd: rkcanfd_chip_fifo_setup(): remove duplicated setup of RX FIFO

can: rockchip_canfd: rkcanfd_chip_fifo_setup(): remove duplicated setup of RX FIFO

The rockchip_canfd driver doesn't make use of the TXE FIFO.

Although the comment states that the TXE FIFO is setup, it's actually
a setup of the RX FIFO. The regular setup of the RX FIFO follows.

Remove the duplicated setup of the RX FIFO.

Fixes: ff60bfbaf67f ("can: rockchip_canfd: add driver for Rockchip CAN-FD controller")
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Link: https://patch.msgid.link/20250219-rk3568-canfd-v1-1-453869358c72@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>