[archiso] Remove fixed know-issue

wooohoooo! Fixed in syslinux 4.06 :)

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

docs/README.knowissues

@@ -8,9 +8,3 @@
     and device mapper devices made by archiso will be "free" on "shutdown tmpfs"
     (A.K.A deinitramfs), build at initramfs by [archiso_shutdown] initcpio hook.
     Proper shutdown is mostly important when persistent is used.
-
-** (2) syslinux 4.05 bug with relative directories on FAT:
-
-    "Could not find kernel image: boot/syslinux/whichsys.c32"
-    This should be fixed in 4.06. For now, workaround with:
-    sed -i "s|../../|/arch|" /<MNT-TARGET-N>/arch/boot/syslinux/syslinux.cfg

docs/README.transfer

@@ -82,7 +82,7 @@ Note: Using here a MBR partition mode as example, but GPT should also works
 4) Extract ISO image on target filesystem.
 # bsdtar -x --exclude=isolinux/ --exclude=EFI/ --exclude=loader/ -f <ISO-SOURCE> -C <MNT-TARGET-N>
 
-5) Install syslinux bootloader on target filesystem. (See know issue (2) if using FAT)
+5) Install syslinux bootloader on target filesystem.
 # extlinux -i <MNT-TARGET-N>/arch/boot/syslinux
 
 6) Unmount target filesystem.