Remove unused dependencies (#6945)

* Remove unused dependencies

Inspired by #6938 ran `cargo +nightly udeps --features extra`.
Removes 2 crates and should remove an unnecessary intra-workspace
dependency which might open up further opportunities for compilation.

* Make windows-only dependency conditional in toml

`omnipath` is only used on Windows and already behind a `#[cfg]` block
in the code. Made the dependency in `Cargo.toml` conditional as well.

* Make `nu-pretty-hex` example a proper example

This allows making `rand` a dev-dependency in this crate.

crates/nu-path/Cargo.toml

@@ -9,6 +9,8 @@ version = "0.70.1"
 
 [dependencies]
 dirs-next = "2.0.0"
+
+[target.'cfg(windows)'.dependencies]
 omnipath = "0.1.1"
 
 [target.'cfg(all(unix, not(target_os = "macos")))'.dependencies]

crates/nu-plugin/Cargo.toml

@@ -13,10 +13,8 @@ nu-protocol = { path = "../nu-protocol", version = "0.70.1"  }
 nu-engine = { path = "../nu-engine", version = "0.70.1"  }
 serde = {version = "1.0.143", features = ["derive"]}
 serde_json = { version = "1.0"}
-byte-order = "0.3.0"
 rmp = "0.8.11"
 rmp-serde = "1.1.0"
-rmpv = "1.0.0"
 
 [dev-dependencies]
 criterion = "0.3"

crates/nu-pretty-hex/Cargo.toml

@@ -12,17 +12,10 @@ doctest = false
 name = "nu_pretty_hex"
 path = "src/lib.rs"
 
-[[bin]]
-name = "nu_pretty_hex"
-path = "src/main.rs"
-
 [dependencies]
 nu-ansi-term = "0.46.0"
-rand = "0.8.3"
 
 [dev-dependencies]
 heapless = { version = "0.7.8", default-features = false }
+rand = "0.8.3"
 
-# [features]
-# default = ["alloc"]
-# alloc = []

crates/nu-protocol/Cargo.toml

@@ -11,7 +11,6 @@ version = "0.70.1"
 
 [dependencies]
 nu-utils = { path = "../nu-utils", version = "0.70.1"  }
-nu-path = { path = "../nu-path", version = "0.70.1"  }
 nu-json = { path = "../nu-json", version = "0.70.1"  }
 
 byte-unit = "4.0.9"

crates/nu-test-support/Cargo.toml

@@ -18,6 +18,5 @@ lazy_static = "1.4.0"
 num-format = "0.4.3"
 
 getset = "0.1.1"
-num-bigint = { version="0.4.3", features=["serde"] }
 tempfile = "3.2.0"
 hamcrest2 = "0.3.0"