images.py: remove shebang

This file is not executable directly, so it should not have the shebang.
Signed-off-by: Avindra Goolcharan <aavindraa@gmail.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

lib/py/images/images.py

-#!/bin/env python2
-
 # This file contains methods to deal with criu images.
 #
 # According to http://criu.org/Images, criu images can be described