iio: adc: men_z188_adc: Remove redundant initialization owner in men_z188_driver

The module_mcb_driver() will set "THIS_MODULE" to driver.owner when
register a mcb_driver, so it is redundant initialization to set
driver.owner in men_z188_driver statement. Remove it for clean code.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230804100938.100435-1-lizetao1@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>