arm: Remove omap3_ha board

This board has not been converted to CONFIG_DM_MMC by the deadline.
Remove it.

Cc: Stefan Roese <sr@denx.de>
Cc: Tapani Utriainen <linuxfae@technexion.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
9 files changed