Input: sensehat-joystick - remove unnecessary error message

The print function dev_err() is redundant because platform_get_irq()
already prints an error.

Eliminates the follow coccicheck warning:

./drivers/input/joystick/sensehat-joystick.c:102:2-9: line 102 is redundant because platform_get_irq() already prints an error

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220427004906.129893-1-yang.lee@linux.alibaba.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>