Remove unused imports and macro attribute.

src/mkdir/mkdir.rs

@@ -15,9 +15,8 @@ extern crate libc;
 #[macro_use]
 extern crate uucore;
 
-use std::ffi::CString;
 use std::fs;
-use std::io::{Error, Write};
+use std::io::Write;
 use std::path::{Path, PathBuf};
 use uucore::fs::UUPathExt;
 
@@ -137,6 +136,9 @@ fn mkdir(path: &Path, mode: u16, verbose: bool) -> i32 {
 
     #[cfg(unix)]
     fn chmod(path: &Path, mode: u16) -> i32 {
+        use std::ffi::CString;
+        use std::io::Error;
+
         let directory = CString::new(path.as_os_str().to_str().unwrap()).unwrap_or_else(|e| crash!(1, "{}", e));
         let mode = mode as libc::mode_t;
 

src/test/test.rs

@@ -12,7 +12,7 @@
 extern crate libc;
 
 use std::collections::HashMap;
-use std::ffi::{CString, OsString};
+use std::ffi::OsString;
 use std::env::{args_os};
 use std::str::{from_utf8};
 
@@ -328,6 +328,8 @@ enum PathCondition {
 fn path(path: &[u8], cond: PathCondition) -> bool {
     use libc::{stat, lstat, S_IFMT, S_IFLNK, S_IFBLK, S_IFCHR, S_IFDIR, S_IFREG};
     use libc::{S_IFIFO, mode_t};
+    use std::ffi::CString;
+
     static S_ISUID: mode_t = 0o4000;
     static S_ISGID: mode_t = 0o2000;
     static S_IFSOCK: mode_t = 0o140000;

src/whoami/platform/windows.rs

@@ -9,8 +9,6 @@
 
 extern crate winapi;
 extern crate advapi32;
-
-#[macro_use]
 extern crate uucore;
 
 use std::ffi::OsString;