Switch from cargo-machete to cargo-shear (#62643)

This results in ~110 crates being removed, and some orphaned files also.

---

Release Notes:

- N/A

Signed-off-by: Neel <neel@zed.dev>

crates/dap/Cargo.toml

@@ -50,9 +50,6 @@ task.workspace = true
 telemetry.workspace = true
 util.workspace = true
 
-[target.'cfg(not(windows))'.dependencies]
-libc.workspace = true
-
 [dev-dependencies]
 async-pipe.workspace = true
 gpui = { workspace = true, features = ["test-support"] }