ide/Kconfig: mark ide-scsi as deprecated

Mark ide-scsi as deprecated and remove stale/bogus documentation.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/Kconfig

@@ -242,7 +242,7 @@ config BLK_DEV_IDEFLOPPY
 	  module will be called ide-floppy.
 
 config BLK_DEV_IDESCSI
-	tristate "SCSI emulation support"
+	tristate "SCSI emulation support (DEPRECATED)"
 	depends on SCSI
 	select IDE_ATAPI
 	---help---
@@ -255,20 +255,6 @@ config BLK_DEV_IDESCSI
 	  and will allow you to use a SCSI device driver instead of a native
 	  ATAPI driver.
 
-	  This is useful if you have an ATAPI device for which no native
-	  driver has been written (for example, an ATAPI PD-CD drive);
-	  you can then use this emulation together with an appropriate SCSI
-	  device driver. In order to do this, say Y here and to "SCSI support"
-	  and "SCSI generic support", below. You must then provide the kernel
-	  command line "hdx=ide-scsi" (try "man bootparam" or see the
-	  documentation of your boot loader (lilo or loadlin) about how to
-	  pass options to the kernel at boot time) for devices if you want the
-	  native EIDE sub-drivers to skip over the native support, so that
-	  this SCSI emulation can be used instead.
-
-	  Note that this option does NOT allow you to attach SCSI devices to a
-	  box that doesn't have a SCSI host adapter installed.
-
 	  If both this SCSI emulation and native ATAPI support are compiled
 	  into the kernel, the native support will be used.