Sema: Remove ConstraintGraphNode::resetBindingSet()

include/swift/Sema/ConstraintGraph.h

@@ -153,10 +153,6 @@ private:
   /// type variable has been bound to a valid type and solver can make progress.
   void introduceToInference(Type fixedType);
 
-  /// Drop all previously collected bindings and re-infer based on the
-  /// current set constraints associated with this equivalence class.
-  void resetBindingSet();
-
   /// Notify all of the type variables that have this one (or any member of
   /// its equivalence class) referenced in their fixed type.
   ///

lib/Sema/ConstraintGraph.cpp

@@ -376,18 +376,6 @@ void ConstraintGraphNode::introduceToInference(Type fixedType) {
   }
 }
 
-void ConstraintGraphNode::resetBindingSet() {
-  assert(forRepresentativeVar());
-
-  Bindings.reset();
-
-  auto &bindings = getCurrentBindings();
-  for (auto *constraint : CG.gatherConstraints(
-           TypeVar, ConstraintGraph::GatheringKind::EquivalenceClass)) {
-    bindings.infer(constraint);
-  }
-}
-
 #pragma mark Graph mutation
 
 void ConstraintGraph::removeNode(TypeVariableType *typeVar) {