Auto merge of #3044 - jeandudey:unused-code, r=alexcrichton

Remove unused macro (configure_shell)

Also i've removed some unused lints on sha256.rs

Author: bors

src/bin/cargo.rs

@@ -71,16 +71,6 @@ fn main() {
     execute_main_without_stdin(execute, true, USAGE)
 }
 
-macro_rules! configure_shell {
-    ($config:expr, $options:expr) => (
-        try!($config.configure($options.flag_verbose,
-                               $options.flag_quiet,
-                               &$options.flag_color,
-                               $options.flag_frozen,
-                               $options.flag_locked));
-    )
-}
-
 macro_rules! each_subcommand{
     ($mac:ident) => {
         $mac!(bench);

src/cargo/util/sha256.rs

@@ -3,8 +3,6 @@ pub use self::imp::Sha256;
 // Someone upstream will link to OpenSSL, so we don't need to explicitly
 // link to it ourselves. Hence we pick up Sha256 digests from OpenSSL
 #[cfg(not(windows))]
-// allow improper ctypes because size_t falls under that in old compilers
-#[allow(bad_style, improper_ctypes)]
 mod imp {
     extern crate openssl;