MAHOUT-1500: cleanup - remove extra trailing lines and unused files

Signed-off-by: Anand Avati <avati@redhat.com>
MAHOUT-1500: cleanup - camelCase naming of variables

Signed-off-by: Anand Avati <avati@redhat.com>
MAHOUT-1500: cleanup - class field names should not start with "_"

Signed-off-by: Anand Avati <avati@redhat.com>