vt: Drop a no longer true comment.

Some guy went on a patching spree, adding 24-bit colour support all around:
https://gist.github.com/XVilka/8346728

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 52442cc..20d89c2a 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1313,11 +1313,11 @@
 		return i;
 
 	if (vc->vc_par[i] == 5 && i + 1 <= vc->vc_npar) {
-		/* 256 colours -- ubiquitous */
+		/* 256 colours */
 		i++;
 		rgb_from_256(vc->vc_par[i], &c);
 	} else if (vc->vc_par[i] == 2 && i + 3 <= vc->vc_npar) {
-		/* 24 bit -- extremely rare */
+		/* 24 bit */
 		c.r = vc->vc_par[i + 1];
 		c.g = vc->vc_par[i + 2];
 		c.b = vc->vc_par[i + 3];