managed: rm RC_EXCHANGE_UNIQUE constant

this is no longer used, exchange allocations do not set ref_count

diff --git a/src/libstd/managed.rs b/src/libstd/managed.rs
index b71b3b503c2acca5514562275b63692b308d5db0..2c9fcb2999f06b694b8569ba6610555aa16f4757 100644 (file)
--- a/src/libstd/managed.rs
+++ b/src/libstd/managed.rs
@@ -17,7 +17,6 @@
 pub mod raw {
     use std::unstable::intrinsics::TyDesc;
 
-    pub static RC_EXCHANGE_UNIQUE : uint = (-1) as uint;
     pub static RC_MANAGED_UNIQUE : uint = (-2) as uint;
     pub static RC_IMMORTAL : uint = 0x77777777;