Remove unused req-deps for optional feature

Fortune for genmarkov's current commit: Future small blessing − 末小吉

Cargo.toml

@@ -23,7 +23,7 @@ strip = false
 default = ["threads", "io_uring"]
 
 threads = ["zstd/zstdmt", "dep:num_cpus"]
-io_uring = ["dep:tokio-uring", "dep:async-compression", "dep:futures", "dep:tokio"]
+io_uring = ["dep:tokio-uring", "dep:async-compression", "dep:futures", "dep:tokio", "dep:os_pipe"]
 
 [dependencies]
 async-compression = { version = "0.4.18", features = ["tokio", "zstd", "zstdmt"], optional = true }
@@ -32,7 +32,7 @@ chain = {package = "markov", version = "1.1.0" }
 clap = { version = "4.5.29", features = ["derive"] }
 futures = { version = "0.3.31", default-features = false, optional = true, features = ["alloc", "async-await", "std"] }
 num_cpus = { version = "1.16.0", optional = true }
-os_pipe = "1.2.1"
+os_pipe = { version = "1.2.1", optional = true }
 serde = { version = "1.0.217", features = ["derive"] }
 serde_cbor = { version = "0.11.2", features = ["alloc"] }
 tokio = { version = "1.43.0", features = ["io-util"], optional = true }