Remove unused rustc_driver dependency on ar

bjorn3 · bjorn3 · commit c61531dc5529 · 2018-07-07T10:52:19.000+02:00
diff --git a/src/librustc_driver/Cargo.toml b/src/librustc_driver/Cargo.toml
@@ -37,5 +37,3 @@ serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }
 syntax_ext = { path = "../libsyntax_ext" }
 syntax_pos = { path = "../libsyntax_pos" }
-
-ar = "0.3.0"
