remove now-unused access to outlives constraints

Author: lqd

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -61,12 +61,12 @@ pub struct RegionInferenceContext<'tcx> {
     pub(crate) liveness_constraints: LivenessValues<RegionVid>,
 
     /// The outlives constraints computed by the type-check.
-    pub(crate) constraints: Frozen<OutlivesConstraintSet<'tcx>>,
+    constraints: Frozen<OutlivesConstraintSet<'tcx>>,
 
     /// The constraint-set, but in graph form, making it easy to traverse
     /// the constraints adjacent to a particular region. Used to construct
     /// the SCC (see `constraint_sccs`) and for error reporting.
-    pub(crate) constraint_graph: Frozen<NormalConstraintGraph>,
+    constraint_graph: Frozen<NormalConstraintGraph>,
 
     /// The SCC computed from `constraints` and the constraint
     /// graph. We have an edge from SCC A to SCC B if `A: B`. Used to