Remove unused imports.

src/install/mode.rs

@@ -1,7 +1,7 @@
 extern crate libc;
 
 use std::io::Write;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 /// Takes a user-supplied string and tries to parse to u16 mode bitmask.
 pub fn parse(mode_string: &str, considering_dir: bool) -> Result<libc::mode_t, String> {

src/uucore/c_types.rs

@@ -10,8 +10,6 @@ use self::libc::{
 };
 pub use self::libc::passwd as c_passwd;
 
-#[cfg(any(target_os = "macos", target_os = "freebsd"))]
-use self::libc::time_t;
 #[cfg(target_os = "macos")]
 use self::libc::int32_t;