Avoid memfd in nix crate

Signed-off-by: Bob Weinand <[email protected]>

Author: bwoebi

ipc/Cargo.toml

@@ -41,7 +41,7 @@ spawn_worker = { path = "../spawn_worker" }
 
 [target.'cfg(not(windows))'.dependencies]
 libc = { version = "0.2" }
-nix = { version = "0.26.2", features = ["fs", "socket", "mman"] }
+nix = { version = "0.26.2", default-features = false, features = ["socket", "mman"] }
 sendfd = { version = "0.4", features = ["tokio"] }
 
 [[bench]]