logodl: remove code for yet another corpse

The logodl board has long been unmaintained and left broken.
As obviously nobody is interestedin that code any more, we may as well
remove it.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: August Hoeraendl <august.hoerandl@gmx.at>
Cc: Robert Schwebel <r.schwebel@pengutronix.de>
Cc: Marek Vasut <marek.vasut@gmail.com>