remove remaining references to Reveal

compiler/rustc_mir_transform/src/shim.rs

@@ -141,7 +141,7 @@ fn make_shim<'tcx>(tcx: TyCtxt<'tcx>, instance: ty::InstanceKind<'tcx>) -> Body<
     debug!("make_shim({:?}) = untransformed {:?}", instance, result);
 
     // We don't validate MIR here because the shims may generate code that's
-    // only valid in a reveal-all param-env. However, since we do initial
+    // only valid in a `PostAnalysis` param-env. However, since we do initial
     // validation with the MirBuilt phase, which uses a user-facing param-env.
     // This causes validation errors when TAITs are involved.
     pm::run_passes_no_validate(