Rollup merge of #51288 - Mark-Simulacrum:delete-is-import, r=eddyb

Remove rustdoc-specific is_import field from HIR

Fixes #47100.

I believe that there is no need to check for the name being the same, as this
part of rustdoc seems to be strictly interested in exploring "public modules."
Re-exports from the same module cannot visit another module; and, re-exports
cannot export items with a greater visibility than that item declares.
Therefore, I think this code is either sufficient, or in fact does more than
is necessary, depending on whether rustdoc cares about the re-export itself.

r? @eddyb

0 files changed, 0 insertions, 0 deletions