diff --git a/tests/unit/plugins/module_utils/conftest.py b/tests/unit/plugins/module_utils/conftest.py
deleted file mode 100644
index 2217dd39f9..0000000000
--- a/tests/unit/plugins/module_utils/conftest.py
+++ /dev/null
@@ -1,73 +0,0 @@
-# Copyright (c) 2017 Ansible Project
-# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
-
-import json
-import sys
-from io import BytesIO
-
-import pytest
-
-import ansible.module_utils.basic
-from ansible.module_utils.six import PY3, string_types
-from ansible.module_utils.common.text.converters import to_bytes
-from ansible.module_utils.common._collections_compat import MutableMapping
-
-
-@pytest.fixture
-def stdin(mocker, request):
-    old_args = ansible.module_utils.basic._ANSIBLE_ARGS
-    ansible.module_utils.basic._ANSIBLE_ARGS = None
-    old_argv = sys.argv
-    sys.argv = ['ansible_unittest']
-
-    if isinstance(request.param, string_types):
-        args = request.param
-    elif isinstance(request.param, MutableMapping):
-        if 'ANSIBLE_MODULE_ARGS' not in request.param:
-            request.param = {'ANSIBLE_MODULE_ARGS': request.param}
-        if '_ansible_remote_tmp' not in request.param['ANSIBLE_MODULE_ARGS']:
-            request.param['ANSIBLE_MODULE_ARGS']['_ansible_remote_tmp'] = '/tmp'
-        if '_ansible_keep_remote_files' not in request.param['ANSIBLE_MODULE_ARGS']:
-            request.param['ANSIBLE_MODULE_ARGS']['_ansible_keep_remote_files'] = False
-        args = json.dumps(request.param)
-    else:
-        raise Exception('Malformed data to the stdin pytest fixture')
-
-    fake_stdin = BytesIO(to_bytes(args, errors='surrogate_or_strict'))
-    if PY3:
-        mocker.patch('ansible.module_utils.basic.sys.stdin', mocker.MagicMock())
-        mocker.patch('ansible.module_utils.basic.sys.stdin.buffer', fake_stdin)
-    else:
-        mocker.patch('ansible.module_utils.basic.sys.stdin', fake_stdin)
-
-    yield fake_stdin
-
-    ansible.module_utils.basic._ANSIBLE_ARGS = old_args
-    sys.argv = old_argv
-
-
-@pytest.fixture
-def am(stdin, request):
-    old_args = ansible.module_utils.basic._ANSIBLE_ARGS
-    ansible.module_utils.basic._ANSIBLE_ARGS = None
-    old_argv = sys.argv
-    sys.argv = ['ansible_unittest']
-
-    argspec = {}
-    if hasattr(request, 'param'):
-        if isinstance(request.param, dict):
-            argspec = request.param
-
-    am = ansible.module_utils.basic.AnsibleModule(
-        argument_spec=argspec,
-    )
-    am._name = 'ansible_unittest'
-
-    yield am
-
-    ansible.module_utils.basic._ANSIBLE_ARGS = old_args
-    sys.argv = old_argv
diff --git a/tests/unit/plugins/module_utils/test_known_hosts.py b/tests/unit/plugins/module_utils/test_known_hosts.py
index 25e76b66f5..0a1196de93 100644
--- a/tests/unit/plugins/module_utils/test_known_hosts.py
+++ b/tests/unit/plugins/module_utils/test_known_hosts.py
@@ -93,11 +93,12 @@ def test_get_fqdn_and_port(url, fqdn, port):
     assert known_hosts.get_fqdn_and_port(url) == (fqdn, port)
 
 
-@pytest.mark.parametrize('fqdn, port, add_host_key_cmd, stdin',
-                         ((URLS[k]['get_fqdn'], URLS[k]['port'], URLS[k]['add_host_key_cmd'], {})
-                          for k in sorted(URLS) if URLS[k]['is_ssh_url']),
-                         indirect=['stdin'])
-def test_add_host_key(am, mocker, fqdn, port, add_host_key_cmd):
+@pytest.mark.parametrize('fqdn, port, add_host_key_cmd',
+                         ((URLS[k]['get_fqdn'], URLS[k]['port'], URLS[k]['add_host_key_cmd'])
+                          for k in sorted(URLS) if URLS[k]['is_ssh_url']))
+def test_add_host_key(mocker, fqdn, port, add_host_key_cmd):
+    am = mocker.MagicMock()
+
     get_bin_path = mocker.MagicMock()
     get_bin_path.return_value = keyscan_cmd = "/custom/path/ssh-keyscan"
     am.get_bin_path = get_bin_path