gpio: lynxpoint: avoid potential warning on error path

When devres API is in use we are not supposed to call plain gpiochip_remove().
Remove redundant call to gpiochip_remove().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>