client/tools: Remove deprecated tool cd_hash.py

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
setup.py: Supress bogus E0611 pylint complaints

There's a mismatch between the version used in pylint
checks and the one used to actually install autotest,
so let's supress those complaints.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>