Input: ariel-pwrbutton - remove unused variable ariel_pwrbutton_id_table

Kernel test robot throws below warning ->

>> drivers/input/misc/ariel-pwrbutton.c:152:35: warning: unused variable
>> 'ariel_pwrbutton_id_table' [-Wunused-const-variable]
   static const struct spi_device_id ariel_pwrbutton_id_table[] = {
                                     ^
   1 warning generated.

Remove unused variable ariel_pwrbutton_id_table[] if no plan to use
it further.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/1608581041-4354-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/ariel-pwrbutton.c

@@ -149,12 +149,6 @@ static const struct of_device_id ariel_pwrbutton_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, ariel_pwrbutton_of_match);
 
-static const struct spi_device_id ariel_pwrbutton_id_table[] = {
-	{ "wyse-ariel-ec-input", 0 },
-	{}
-};
-MODULE_DEVICE_TABLE(spi, ariel_pwrbutton_id_table);
-
 static struct spi_driver ariel_pwrbutton_driver = {
 	.driver = {
 		.name = "dell-wyse-ariel-ec-input",