eco32: remove debug print outs

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
eco32: make syscall debug conditional on DEBUG

This will probably completely go away some day,
but until then, make it look a bit nicer
(and deactivated for most of the time).

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
eco32: remove debug code