powerpc: mpc83xx: remove MPC8360ERDK, EMPC8360EMDS support

These boards are still non-generic boards.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Dave Liu <daveliu@freescale.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
28 files changed