arch: m68k: q40: README: drop references to IDE driver

Since IDE support was deleted by Christoph Hellwig <hch@lst.de>,
Jun 16 2021, drop the left-over from README file, updating the
documentation to point to ata/pata_falcon.c.

Fixes: 44b1fbc0 ("m68k/q40: Replace q40ide driver with pata_falcon and falconide")
Fixes: b7fb14d3 ("ide: remove the legacy ide driver")
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/d6e3482ed622b6953db69cddb70f20c55c96e4da.1656234456.git.mchehab@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

arch/m68k/q40/README

@@ -30,11 +30,10 @@ drivers used by the Q40, apart from the very obvious (console etc.):
 		     genrtc.c		# RTC
 		char/joystick/*		# most of this should work, not
 				        # in default config.in
-	        block/q40ide.c		# startup for ide
-		      ide*		# see Documentation/ide/ide.rst
-		      floppy.c		# normal PC driver, DMA emu in asm/floppy.h
+	        block/floppy.c		# normal PC driver, DMA emu in asm/floppy.h
 					# and arch/m68k/kernel/entry.S
 					# see drivers/block/README.fd
+		ata/pata_falcon.c
 		net/ne.c
 		video/q40fb.c
 		parport/*