ARM: disable CONFIG_IDE in pxa_defconfig

pxa_defconfig already enables libata including the pata_pcmcia driver, so
drop the legacy ide driver and idecs host driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210616134658.1471835-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>