ARM: at91/ide: remove unsused at91-ide Kconfig entry

Commit cf844751 ("ARM: at91: drop ide driver in favor of the pata
one") removed the at91-ide driver but did not remove the Kconfig entry.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/ide/Kconfig

@@ -702,11 +702,6 @@ config BLK_DEV_IDE_TX4939
 	depends on SOC_TX4939
 	select BLK_DEV_IDEDMA_SFF
 
-config BLK_DEV_IDE_AT91
-	tristate "Atmel AT91 (SAM9, CAP9, AT572D940HF) IDE support"
-	depends on ARM && ARCH_AT91 && !ARCH_AT91RM9200 && !ARCH_AT91X40
-	select IDE_TIMINGS
-
 config BLK_DEV_IDE_ICSIDE
 	tristate "ICS IDE interface support"
 	depends on ARM && ARCH_ACORN