macro_use_import: Don't check is attribute comes from expansion (#14317)

It is not possible to write a declarative macro, that produces an
attribute w/o
an item attached to it. This means that the `check_item` will already
insert the
span in the map, if it came from an expansion. So additionally checking
if the
macro came from an expansion doesn't add anything here. So the
`check_attribute` function, and with that the problematic `attr.span()`
call can
be completely removed.

Fixes https://github.com/rust-lang/rust-clippy/issues/14303

r? @y21

cc @jdonszelmann

changelog: Fix ICE in [`macro_use_import`] lint

0 files changed, 0 insertions, 0 deletions