Revert "fbdev: atafb - add palette register check"

This reverts commit 8546e3ce6e37c359979b69862442f94e0ef0e03b, as it's a
partial duplicate of commit 2f390380ca69e1617cdddb12d8da94f0a9f4319d
("fbdev: add palette register check to several drivers").

The former went in first through the m68k tree, the latter through Andrew
Morton.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/video/atafb.c

···
 	if (regno > 255)
 		return 1;
 
-	if (regno > 255)
-		return 1;
-
 	switch (external_card_type) {
 	case IS_VGA:
 		OUTB(0x3c8, regno);