python: Remove init_resource() deprecated API
    
    write_resource() is used to replace init_resource() functionality
    as far back as in commit:
    
        commit 3e17957
        Author: Federico Simoncelli <fsimonce@redhat.com>
        Date:   Wed Apr 10 12:09:43 2013 -0400
    
            python: use the write commands in example.py
    
            The init_lockspace/resource commands have been obsoleted, the new ones
            are write_lockspace/resource.
    
    The old API was kept to support legacy python2-sanlock consuming code.
    Now that python 2 is officialy retired this API can be removed.
    
    Signed-off-by: Amit Bawer <abawer@redhat.com>