Revert "Introduce cloud-init test for EC2 and Azure"

[pdostal]

Reverts #19816

Verification run: https://pdostal-server.suse.cz/tests/7209#

[pdostal]

Reenablement here: #19969

[asmorodskyi]

may I ask for info why revert was done ?

[pdostal]

Because of

$instance->ssh_assert_script_run('sudo mkdir -p /etc/ssh/sshd_config.d/');
$instance->ssh_assert_script_run('echo "PermitRootLogin prohibit-password" | sudo tee /etc/ssh/sshd_config.d/001_sshd_openqa.conf');
$instance->ssh_assert_script_run('echo "AllowTcpForwarding yes" | sudo tee -a /etc/ssh/sshd_config.d/001_sshd_openqa.conf') if (is_hardened());
$instance->ssh_assert_script_run('sudo systemctl reload sshd');

didn't work on hardened images.