Remove unneeded code, we now require PyTest >= 7.1

Signed-off-by: Pedro Algarvio <palgarvio@vmware.com>

Author: s0undt3ch

tests/conftest.py

@@ -1,32 +1,4 @@
 # Copyright 2021-2023 VMware, Inc.
 # SPDX-License-Identifier: Apache-2.0
 #
-import pytest
-
-try:  # pragma: no cover
-    import importlib.metadata
-
-    pkg_version = importlib.metadata.version
-except ImportError:  # pragma: no cover
-    try:
-        import importlib_metadata
-
-        pkg_version = importlib_metadata.version
-    except ImportError:  # pragma: no cover
-        import pkg_resources
-
-        def pkg_version(package):
-            return pkg_resources.get_distribution(package).version
-
-
-def pkg_version_info(package):
-    return tuple(int(part) for part in pkg_version(package).split(".") if part.isdigit())
-
-
-if pkg_version_info("pytest") >= (6, 2):
-    pytest_plugins = ["pytester"]
-else:
-
-    @pytest.fixture
-    def pytester():
-        pytest.skip("The pytester fixture is not available in Pytest < 6.2.0")
+pytest_plugins = ["pytester"]