Remove useless crates

Cargo.toml

@@ -192,14 +192,8 @@ yes      = { optional=true, path="src/yes" }
 
 [dev-dependencies]
 time = "*"
-kernel32-sys = "*"
-winapi = "*"
 filetime = "*"
 libc = "*"
-memchr = "*"
-primal = "*"
-aho-corasick= "*"
-regex-syntax= "*"
 regex="*"
 rand="*"
 tempdir="*"

tests/test_install.rs

@@ -1,10 +1,3 @@
-extern crate libc;
-extern crate time;
-extern crate kernel32;
-extern crate winapi;
-extern crate filetime;
-
-use self::filetime::*;
 use common::util::*;
 use std::os::unix::fs::PermissionsExt;
 
@@ -17,7 +10,7 @@ fn at_and_ucmd() -> (AtPath, UCommand) {
 
 #[test]
 fn test_install_help() {
-    let (at, mut ucmd) = at_and_ucmd();
+    let (_, mut ucmd) = at_and_ucmd();
 
     let result = ucmd.arg("--help").run();
 

tests/test_link.rs

@@ -1,5 +1,3 @@
-extern crate libc;
-
 use common::util::*;
 
 static UTIL_NAME: &'static str = "link";

tests/test_mv.rs

@@ -1,7 +1,4 @@
-extern crate libc;
 extern crate time;
-extern crate kernel32;
-extern crate winapi;
 extern crate filetime;
 
 use self::filetime::*;

tests/test_rmdir.rs

@@ -1,5 +1,3 @@
-extern crate libc;
-
 use common::util::*;
 
 static UTIL_NAME: &'static str = "rmdir";