Auto merge of #92518 - matthiaskrgr:rollup-fl8z4e7, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #90102 (Remove `NullOp::Box`)
 - #92011 (Use field span in `rustc_macros` when emitting decode call)
 - #92402 (Suggest while let x = y when encountering while x = y)
 - #92409 (Couple of libtest cleanups)
 - #92418 (Fix spacing in pretty printed PatKind::Struct with no fields)
 - #92444 (Consolidate Result's and Option's methods into fewer impl blocks)

Failed merges:

 - #92483 (Stabilize `result_cloned` and `result_copied`)

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 0 insertions, 7 deletions

diff --git a/compiler/rustc_mir_transform/src/const_prop.rs b/compiler/rustc_mir_transform/src/const_prop.rs
index 7e56e062fc9..ecc8e7a6f1a 100644
--- a/compiler/rustc_mir_transform/src/const_prop.rs
+++ b/compiler/rustc_mir_transform/src/const_prop.rs
@@ -239,13 +239,6 @@ impl<'mir, 'tcx> interpret::Machine<'mir, 'tcx> for ConstPropMachine<'mir, 'tcx>
         throw_machine_stop_str!("pointer arithmetic or comparisons aren't supported in ConstProp")
     }
 
-    fn box_alloc(
-        _ecx: &mut InterpCx<'mir, 'tcx, Self>,
-        _dest: &PlaceTy<'tcx>,
-    ) -> InterpResult<'tcx> {
-        throw_machine_stop_str!("can't const prop heap allocations")
-    }
-
     fn access_local(
         _ecx: &InterpCx<'mir, 'tcx, Self>,
         frame: &Frame<'mir, 'tcx, Self::PointerTag, Self::FrameExtra>,