Feature/remove ansible

ansible/hosts.cfg

-[defaults]
-host_key_checking=False
-[gitlab_ci_deploy_targets]
-phoenix.hlr.rz.tu-bs.de ansible_ssh_private_key_file=./private_key
-[gitlab_ci_deploy_cppcheck]
-elladan.irmb.bau.tu-bs.de
-[gitlab_ci_deploy_gcov]
-elladan.irmb.bau.tu-bs.de
-[gitlab_ci_deploy_wheel]
-finrod.irmb.bau.tu-bs.de ansible_ssh_private_key_file=~/private_key ansible_become_password="{{ lookup('env', 'ANSIBLE_JUPYTER_HOST_BECOME_PASSWORD') }}"
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