fix: run python_multiprocessing_lock_works integration test on Mac and Linux

codex-rs/core/tests/sandbox.rs

@@ -1,49 +0,0 @@
-// TODO(mbolin): Update this test to run on Linux, as well.
-// (Should rename the test as part of that work.)
-#[cfg(target_os = "macos")]
-#[tokio::test]
-async fn python_multiprocessing_lock_works_under_seatbelt() {
-    #![expect(clippy::expect_used)]
-    use codex_core::protocol::SandboxPolicy;
-    use codex_core::seatbelt::spawn_command_under_seatbelt;
-    use codex_core::spawn::StdioPolicy;
-    use std::collections::HashMap;
-
-    let policy = SandboxPolicy::WorkspaceWrite {
-        writable_roots: vec![],
-        network_access: false,
-        exclude_tmpdir_env_var: false,
-        exclude_slash_tmp: false,
-    };
-
-    let python_code = r#"import multiprocessing
-from multiprocessing import Lock, Process
-
-def f(lock):
-    with lock:
-        print("Lock acquired in child process")
-
-if __name__ == '__main__':
-    lock = Lock()
-    p = Process(target=f, args=(lock,))
-    p.start()
-    p.join()
-"#;
-
-    let mut child = spawn_command_under_seatbelt(
-        vec![
-            "python3".to_string(),
-            "-c".to_string(),
-            python_code.to_string(),
-        ],
-        &policy,
-        std::env::current_dir().expect("should be able to get current dir"),
-        StdioPolicy::RedirectForShellTool,
-        HashMap::new(),
-    )
-    .await
-    .expect("should be able to spawn python under seatbelt");
-
-    let status = child.wait().await.expect("should wait for child process");
-    assert!(status.success(), "python exited with {status:?}");
-}