[6.15.z] Remove CSV parser workaround

[tpapaioa]

Problem Statement

A previous PR #15823 removed outdated code from robottelo's hammer CSV output handling. This PR removes the last workaround, now that the fix for https://projects.theforeman.org/issues/37264 is included in 6.15 with rubygem-hammer_cli_foreman_tasks-0.0.21-1.el8sat.noarch.

Solution

Remove the workaround that scans for non-CSV patterns in the output.

Related Issues

SAT-27296

[tpapaioa]

trigger: test-robottelo
pytest: tests/foreman/cli/test_host.py::test_positive_install_package_via_rex[rhel8-ipv4] tests/foreman/cli/test_ldapauthsource.py::TestADAuthSource::test_positive_refresh_usergroup_with_ad[foobargroup] tests/foreman/cli/test_ansible.py::TestAnsibleREX::test_positive_run_packages_and_services_job[rhel8-ipv4]

[Satellite-QE]

PRT Result

Build Number: 8852
Build Status: SUCCESS
PRT Comment: pytest tests/foreman/cli/test_host.py::test_positive_install_package_via_rex[rhel8-ipv4] tests/foreman/cli/test_ldapauthsource.py::TestADAuthSource::test_positive_refresh_usergroup_with_ad[foobargroup] tests/foreman/cli/test_ansible.py::TestAnsibleREX::test_positive_run_packages_and_services_job[rhel8-ipv4] --external-logging
Test Result : ================= 3 passed, 118 warnings in 1086.15s (0:18:06) =================