spi: pxa2xx: drv_data can't be NULL in ->remove()

There is no need for drv_data check against NULL, since it won't happen.
Remove useless check.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200224154556.11627-2-andriy.shevchenko@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>