Input: zet6223 - remove an unused field in struct zet6223_ts

In "struct zet6223_ts", the 'vcc' and 'vio' fields are unused.

So, remove them.

Found with cppcheck, unusedStructMember.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/3065d885341e2730dd3e7905d75514796a8c25e4.1715507858.git.christophe.jaillet@wanadoo.frSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/zet6223.c

@@ -25,8 +25,6 @@
 struct zet6223_ts {
 	struct i2c_client *client;
 	struct input_dev *input;
-	struct regulator *vcc;
-	struct regulator *vio;
 	struct touchscreen_properties prop;
 	struct regulator_bulk_data supplies[2];
 	u16 max_x;