Input: tps6507x-ts - remove unneeded NULL test

Stanse found that tsc is dereferenced earlier than checked for being
NULL in tps6507x_ts_remove. Remove the test because there is no way
for tsc to be NULL there.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/tps6507x-ts.c

@@ -355,9 +355,6 @@ static int __devexit tps6507x_ts_remove(struct platform_device *pdev)
 	struct tps6507x_ts *tsc = tps6507x_dev->ts;
 	struct input_dev *input_dev = tsc->input_dev;
 
-	if (!tsc)
-		return 0;
-
 	cancel_delayed_work_sync(&tsc->work);
 	destroy_workqueue(tsc->wq);