wifi: ath10k: Drop cleaning of driver data from probe error path and remove

The driver core cares for resetting driver data if probe fails and after
remove. So drop the explicit and duplicate cleanup in the driver's
functions.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230601082556.2738446-2-u.kleine-koenig@pengutronix.de