netstack: Remove dnsd

It isn't used anywhere. Relibc has it's own dns resolver.

netstack/Cargo.toml

@@ -3,10 +3,6 @@ name = "redox_netstack"
 version = "0.1.0"
 edition = "2021"
 
-[[bin]]
-name = "dnsd"
-path = "src/dnsd/main.rs"
-
 [[bin]]
 name = "smolnetd"
 path = "src/smolnetd/main.rs"
@@ -21,10 +17,8 @@ redox_event = "0.4.1"
 redox-daemon = "0.1.2"
 redox_syscall = { version = "0.5", features = ["std"] }
 redox-log = "0.1"
-dns-parser = "0.7.1"
 libredox = { version = "0.1.3", features = ["mkns"] }
 anyhow = "1.0.81"
-ioslice = "0.6.0"
 #redox-scheme = "0.5.0"
 redox-scheme = { git = "https://gitlab.redox-os.org/redox-os/redox-scheme.git" }