diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs
index eb8ea0bc114..d9bd9ad5543 100644
--- a/compiler/rustc_middle/src/ty/mod.rs
+++ b/compiler/rustc_middle/src/ty/mod.rs
@@ -1253,14 +1253,6 @@ impl<'tcx> ToPredicate<'tcx, Clause<'tcx>> for TraitRef<'tcx> {
     }
 }
 
-impl<'tcx> ToPredicate<'tcx, Clause<'tcx>> for TraitPredicate<'tcx> {
-    #[inline(always)]
-    fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Clause<'tcx> {
-        let p: Predicate<'tcx> = self.to_predicate(tcx);
-        p.expect_clause()
-    }
-}
-
 impl<'tcx> ToPredicate<'tcx> for Binder<'tcx, TraitRef<'tcx>> {
     #[inline(always)]
     fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
@@ -1287,18 +1279,6 @@ impl<'tcx> ToPredicate<'tcx, PolyTraitPredicate<'tcx>> for Binder<'tcx, TraitRef
     }
 }
 
-impl<'tcx> ToPredicate<'tcx, PolyTraitPredicate<'tcx>> for TraitRef<'tcx> {
-    fn to_predicate(self, tcx: TyCtxt<'tcx>) -> PolyTraitPredicate<'tcx> {
-        ty::Binder::dummy(self).to_predicate(tcx)
-    }
-}
-
-impl<'tcx> ToPredicate<'tcx, PolyTraitPredicate<'tcx>> for TraitPredicate<'tcx> {
-    fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> PolyTraitPredicate<'tcx> {
-        ty::Binder::dummy(self)
-    }
-}
-
 impl<'tcx> ToPredicate<'tcx> for PolyTraitPredicate<'tcx> {
     fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
         self.map_bound(|p| PredicateKind::Clause(ClauseKind::Trait(p))).to_predicate(tcx)
@@ -1312,12 +1292,6 @@ impl<'tcx> ToPredicate<'tcx, Clause<'tcx>> for PolyTraitPredicate<'tcx> {
     }
 }
 
-impl<'tcx> ToPredicate<'tcx> for OutlivesPredicate<ty::Region<'tcx>, ty::Region<'tcx>> {
-    fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
-        ty::Binder::dummy(PredicateKind::Clause(ClauseKind::RegionOutlives(self))).to_predicate(tcx)
-    }
-}
-
 impl<'tcx> ToPredicate<'tcx> for PolyRegionOutlivesPredicate<'tcx> {
     fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
         self.map_bound(|p| PredicateKind::Clause(ClauseKind::RegionOutlives(p))).to_predicate(tcx)
@@ -1330,12 +1304,6 @@ impl<'tcx> ToPredicate<'tcx> for OutlivesPredicate<Ty<'tcx>, ty::Region<'tcx>> {
     }
 }
 
-impl<'tcx> ToPredicate<'tcx> for PolyTypeOutlivesPredicate<'tcx> {
-    fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
-        self.map_bound(|p| PredicateKind::Clause(ClauseKind::TypeOutlives(p))).to_predicate(tcx)
-    }
-}
-
 impl<'tcx> ToPredicate<'tcx> for ProjectionPredicate<'tcx> {
     fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> {
         ty::Binder::dummy(PredicateKind::Clause(ClauseKind::Projection(self))).to_predicate(tcx)