Remove the unit test check - the versions are determined by virtualenv at creation time

test/11_dependency_versions/cibuildwheel_test.py

@@ -48,8 +48,6 @@ def test_pinned_versions(python_version):
     actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
         'CIBW_BUILD': cibw_build_option,
         'CIBW_ENVIRONMENT': cibw_environment_option,
-        'CIBW_TEST_REQUIRES': 'pytest',
-        'CIBW_TEST_COMMAND': 'pytest {project}/test',
     })
 
     # also check that we got the right wheels
@@ -100,8 +98,6 @@ def test_dependency_constraints_file(tmp_path):
     actual_wheels = utils.cibuildwheel_run(project_dir, add_env={
         'CIBW_ENVIRONMENT': cibw_environment_option,
         'CIBW_DEPENDENCY_VERSIONS': str(constraints_file),
-        'CIBW_TEST_REQUIRES': 'pytest',
-        'CIBW_TEST_COMMAND': 'pytest {project}/test',
     })
 
     # also check that we got the right wheels

test/11_dependency_versions/test/spam_test.py

@@ -1,17 +0,0 @@
-import os
-import subprocess
-
-
-def test_expected_pip_version():
-    expected_pip_version = os.environ['EXPECTED_PIP_VERSION']
-
-    versions_output_text = subprocess.check_output(
-        ['pip', 'freeze', '--all', '-qq'],
-        universal_newlines=True,
-    )
-    versions = versions_output_text.strip().splitlines()
-
-    # `versions` now looks like:
-    # ['pip==x.x.x', 'setuptools==x.x.x', 'wheel==x.x.x']
-
-    assert 'pip=={}'.format(expected_pip_version) in versions