staging: ti dspbridge: remove cmm_xlator_delete wrapper

Resending this patch since it was missed in the last merge...

Remove unnecessary cmm_xlator_delete function and use
kfree() kernel function directly.

Signed-off-by: Ernesto Ramos <ernesto@ti.com>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>