Remove the TUI test dependency on codex-cli (#38746)

## What changed

Remove the unused `codex-cli` dev-dependency and the no-op import that kept it
visible to `cargo-shear`. TUI tests continue to locate spawned binaries through
`codex-utils-cargo-bin`.

GitOrigin-RevId: ba5855590c6f0300845170f15f39d77c0611a60a

codex-rs/Cargo.lock

@@ -4350,7 +4350,6 @@ dependencies = [
  "codex-app-server-client",
  "codex-app-server-protocol",
  "codex-arg0",
- "codex-cli",
  "codex-cloud-config",
  "codex-config",
  "codex-connectors",

codex-rs/Cargo.toml

@@ -167,7 +167,6 @@ codex-arg0 = { path = "arg0" }
 codex-async-utils = { path = "async-utils" }
 codex-backend-client = { path = "backend-client" }
 codex-chatgpt = { path = "chatgpt" }
-codex-cli = { path = "cli" }
 codex-client = { path = "codex-client" }
 codex-collaboration-mode-templates = { path = "collaboration-mode-templates" }
 codex-cloud-config = { path = "cloud-config" }

codex-rs/tui/Cargo.toml

@@ -149,7 +149,6 @@ arboard = { workspace = true }
 
 [dev-dependencies]
 app_test_support = { workspace = true }
-codex-cli = { workspace = true }
 codex-mcp = { workspace = true }
 core_test_support = { workspace = true }
 codex-utils-cargo-bin = { workspace = true }

codex-rs/tui/tests/all.rs

@@ -4,7 +4,4 @@
 // The submodules live in `tests/suite/`.
 mod test_backend;
 
-#[allow(unused_imports)]
-use codex_cli as _; // Keep dev-dep for cargo-shear; tests spawn the codex binary.
-
 mod suite;