Rollup merge of rust-lang#69059 - ljedrz:unused_stuff, r=Dylan-DPC

Remove a few unused objects As far as I can tell, these won't be missed: - `infer::region_constraints::ConstraintInfo` - `driver::DefaultCallbacks` - ~~`hir::intravisit::ParDeepVisitor`~~
Dylan-DPC-zz · Feb 12, 2020 · db48a8a · db48a8a
2 parents 6b40f59 + d8544ce
commit db48a8a
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diff --git a/src/librustc/infer/region_constraints/mod.rs b/src/librustc/infer/region_constraints/mod.rs
@@ -339,8 +339,6 @@ impl TaintDirections {
     }
 }
 
-pub struct ConstraintInfo {}
-
 impl<'tcx> RegionConstraintCollector<'tcx> {
     pub fn new() -> Self {
         Self::default()

diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
@@ -120,10 +120,6 @@ pub trait Callbacks {
     }
 }
 
-pub struct DefaultCallbacks;
-
-impl Callbacks for DefaultCallbacks {}
-
 #[derive(Default)]
 pub struct TimePassesCallbacks {
     time_passes: bool,