Fix Windows environment issues in tests instead of functions.

The issue might be too specific to require this fix.
Something like a warning might be better.

pytest_console_scripts.py

@@ -281,13 +281,6 @@ def run_subprocess(
         if _is_nonexecutable_python_file(script_path):
             cmd_args = [sys.executable or 'python'] + cmd_args
 
-        env: dict[str, str] | None = options.get("env")
-        # Prevent _Py_HashRandomization_Init failure on Windows
-        if env is not None and "SYSTEMROOT" in os.environ:
-            env = env.copy()
-            env.setdefault("SYSTEMROOT", os.environ["SYSTEMROOT"])
-            options["env"] = env
-
         cp = subprocess.run(
             cmd_args,
             input=stdin_input,

tests/test_run_scripts.py

@@ -48,7 +48,8 @@ def test_elsewhere_in_the_path(
     console_script: Path, script_runner: ScriptRunner
 ) -> None:
     console_script.chmod(0o777)
-    env = {'PATH': f"{console_script.parent}{os.pathsep}{os.environ['PATH']}"}
+    env = os.environ.copy()
+    env["PATH"] = f"{console_script.parent}{os.pathsep}{env['PATH']}"
     result = script_runner.run(console_script.name, env=env)
     assert result.success
     assert result.stdout == 'foo\n'
@@ -187,7 +188,9 @@ def test_env(console_script: Path, script_runner: ScriptRunner) -> None:
 os.environ['FOO'] = 'baz'
         """
     )
-    result = script_runner.run(str(console_script), env={'FOO': 'bar'})
+    env = os.environ.copy()
+    env['FOO'] = 'bar'
+    result = script_runner.run(str(console_script), env=env)
     assert result.success
     assert result.stdout == 'bar\n'
     assert 'FOO' not in os.environ