rustc: remove unnecessary ItemSubsts wrapper.

[rust.git] / src / librustc / util / ppaux.rs

diff --git a/src/librustc/util/ppaux.rs b/src/librustc/util/ppaux.rs
index 8ca699339d36ecedca7a92a3e785b51fffb248bf..6f6d48cdf58af1209defc6050b0d8d522e4fc04c 100644 (file)
--- a/src/librustc/util/ppaux.rs
+++ b/src/librustc/util/ppaux.rs
@@ -361,12 +361,6 @@ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     }
 }
 
-impl<'tcx> fmt::Debug for ty::ItemSubsts<'tcx> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "ItemSubsts({:?})", self.substs)
-    }
-}
-
 impl<'tcx> fmt::Debug for ty::TraitRef<'tcx> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         // when printing out the debug representation, we don't need
@@ -504,13 +498,7 @@ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     }
 }
 
-impl<'tcx> fmt::Debug for ty::ParameterEnvironment<'tcx> {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "ParameterEnvironment({:?})", self.caller_bounds)
-    }
-}
-
-impl<'tcx> fmt::Display for ty::RegionKind {
+impl fmt::Display for ty::RegionKind {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         if verbose() {
             return write!(f, "{:?}", *self);