media: staging: sun6i-isp: Remove redundant printk

platform_get_irq() already prints an error for us.

Found by cocci:
drivers/staging/media/sunxi/sun6i-isp/sun6i_isp.c:389:2-9: line 389 is redundant because platform_get_irq() already prints an error

Link: https://lore.kernel.org/linux-media/20240429-fix-cocci-v3-7-3c4865f5a4b0@chromium.org
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>