minor fallout from the change.

(Presumably the place that borrow_check ends up reporting for the
error about is no longer the root `Local` itself, and thus the note
diagnostic here stops firing.)

Author: pnkfelix

src/test/ui/generator/dropck.nll.stderr

@@ -9,8 +9,6 @@ LL | }
    | |
    | `*cell` dropped here while still borrowed
    | borrow later used here, when `gen` is dropped
-   |
-   = note: values in a scope are dropped in the opposite order they are defined
 
 error[E0597]: `ref_` does not live long enough
   --> $DIR/dropck.rs:22:11

src/test/ui/span/dropck-object-cycle.nll.stderr

@@ -9,8 +9,6 @@ LL | }
    | |
    | `*m` dropped here while still borrowed
    | borrow later used here, when `m` is dropped
-   |
-   = note: values in a scope are dropped in the opposite order they are defined
 
 error: aborting due to previous error