cli: Remove obsolete CLI test scaffolding

Co-authored-by: SCE <sce@crocoder.dev>

Author: davidabram

cli/Cargo.lock

@@ -44,13 +44,6 @@ opentelemetry = { version = "0.28", features = ["trace"] }
 opentelemetry_sdk = { version = "0.28", features = ["rt-tokio"] }
 opentelemetry-otlp = { version = "0.28", features = ["grpc-tonic", "http-proto", "trace"] }
 
-[dev-dependencies]
-portable-pty = "0.8"
-regex = "1"
-
-[target.'cfg(unix)'.dev-dependencies]
-libc = "0.2"
-
 [lints]
 workspace = true