Staging: sbe-2t3e3: remove T3E3_USE_CONTIGMALLOC

This code looks useless, t3e3_contigmemory_size is neither declared
nor used anywhere else, as well as T3E3_USE_CONTIGMALLOC.

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>