Cleanup unused imports

src/comp/metadata/creader.rs

@@ -4,11 +4,9 @@ import driver::session;
 import syntax::{ast, ast_util};
 import lib::llvm::{False, llvm, mk_object_file, mk_section_iter};
 import front::attr;
-import middle::resolve;
 import syntax::visit;
 import syntax::codemap::span;
-import back::x86;
-import util::{common, filesearch};
+import util::{filesearch};
 import std::{vec, str, fs, io, option};
 import std::option::{none, some};
 import std::map::{hashmap, new_int_hash};

src/comp/metadata/decoder.rs

@@ -1,13 +1,11 @@
 // Decoding metadata from a single crate's metadata
 
 import std::{ebml, vec, option, str, io};
-import std::map::hashmap;
 import syntax::{ast, ast_util};
 import front::attr;
 import middle::ty;
 import common::*;
 import tydecode::{parse_def_id, parse_ty_data};
-import driver::session;
 import syntax::print::pprust;
 import cstore;
 

src/comp/metadata/encoder.rs

@@ -1,7 +1,6 @@
 // Metadata encoding
 
-import std::{vec, str, uint, io, option, ebml, map};
-import std::option::{some, none};
+import std::{vec, str, uint, io, ebml, map};
 import syntax::ast::*;
 import syntax::ast_util;
 import syntax::ast_util::local_def;

src/comp/metadata/tydecode.rs

@@ -1,6 +1,6 @@
 // Type decoding
 
-import std::{vec, str, uint, option};
+import std::{vec, str, uint};
 import std::option::{none, some};
 import syntax::ast;
 import syntax::ast::*;

src/comp/metadata/tyencode.rs

@@ -1,12 +1,11 @@
 // Type encoding
 
-import std::{str, io, int, uint};
+import std::{io, int, uint};
 import std::map::hashmap;
 import std::option::{some, none};
 import syntax::ast::*;
 import middle::ty;
 import syntax::print::pprust::*;
-import util::common;
 
 export ctxt;
 export ty_abbrev;