powerpc: disable IDE subsystem in pq2fads_defconfig

This patch disables deprecated IDE subsystem in pq2fads_defconfig
(no IDE host drivers are selected in this config so there is no valid
reason to enable IDE subsystem itself).
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Scott Wood <oss@buserror.net>

arch/powerpc/configs/pq2fads_defconfig

@@ -40,7 +40,6 @@ CONFIG_MTD_CFI_I4=y
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_BLK_DEV_LOOP=y
-CONFIG_IDE=y
 CONFIG_NETDEVICES=y
 CONFIG_TUN=y
 CONFIG_FS_ENET=y