Remove orphaned remove_dir_all implementation from rust-installer

I have no idea why it's here, but it's not used at all.

Author: Noratrieb

Cargo.lock

@@ -2774,13 +2774,11 @@ dependencies = [
  "anyhow",
  "clap 3.2.20",
  "flate2",
- "lazy_static",
  "num_cpus",
  "rayon",
  "remove_dir_all",
  "tar",
  "walkdir",
- "winapi",
  "xz2",
 ]
 

src/tools/rust-installer/Cargo.toml

@@ -22,7 +22,3 @@ remove_dir_all = "0.5"
 [dependencies.clap]
 features = ["derive"]
 version = "3.1"
-
-[target."cfg(windows)".dependencies]
-lazy_static = "1"
-winapi = { version = "0.3", features = ["errhandlingapi", "handleapi", "ioapiset", "winerror", "winioctl", "winnt"] }