chore: remove unused dependencies discovered by cargo-machete

linux-nvim/Cargo.toml

@@ -4,15 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-rmp-serde = "1.1"
-rmpv = "1.0"
 tokio = { version = "1.37", features = ["full"] }
-schemars = "1.2.2"
-tracing-appender = "0.2.5"
-tracing = "0.1.44"
-tracing-subscriber = "0.3.23"
-dirs = "7.0.0"
 
 nvim-core = { path = "../nvim-core" }