Remove unused Lift derives.

I found these by commenting out all `Lift` derives and then adding back
the ones that were necessary to successfully compile.

compiler/rustc_trait_selection/src/traits/query/type_op/implied_outlives_bounds.rs

@@ -13,7 +13,7 @@ use rustc_span::def_id::CRATE_DEF_ID;
 use rustc_span::source_map::DUMMY_SP;
 use smallvec::{smallvec, SmallVec};
 
-#[derive(Copy, Clone, Debug, HashStable, TypeFoldable, TypeVisitable, Lift)]
+#[derive(Copy, Clone, Debug, HashStable, TypeFoldable, TypeVisitable)]
 pub struct ImpliedOutlivesBounds<'tcx> {
     pub ty: Ty<'tcx>,
 }

compiler/rustc_trait_selection/src/traits/query/type_op/outlives.rs

@@ -6,7 +6,7 @@ use crate::traits::ObligationCtxt;
 use rustc_middle::traits::query::{DropckOutlivesResult, NoSolution};
 use rustc_middle::ty::{ParamEnvAnd, Ty, TyCtxt};
 
-#[derive(Copy, Clone, Debug, HashStable, TypeFoldable, TypeVisitable, Lift)]
+#[derive(Copy, Clone, Debug, HashStable, TypeFoldable, TypeVisitable)]
 pub struct DropckOutlives<'tcx> {
     dropped_ty: Ty<'tcx>,
 }