HID: remove unused variable in quirk event handler

Remove unused variable in quirk event handler.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-input-quirks.c

@@ -355,7 +355,6 @@ int hidinput_mapping_quirks(struct hid_usage *usage,
 void hidinput_event_quirks(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 {
 	struct input_dev *input;
-	unsigned *quirks = &hid->quirks;
 
 	input = field->hidinput->input;