tests/test-check-rust-format.t

rust: remove excessive calls to `#[timed]`

This makes trace output *really* noisy and is only useful in case you want to
take a look at a single revlog.

This is easy to add back on a case-by-case basis and does not need to stay with
the more permanent timers.

#require rustfmt test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"

  $ cd "$TESTDIR"/..

Warning: Keep this in sync with hghave.py
  $ RUSTFMT=$(rustup which --toolchain nightly-2021-11-02 rustfmt)
  $ for f in `testrepohg files 'glob:**/*.rs'` ; do
  >   $RUSTFMT --check --edition=2018 --unstable-features --color=never $f
  > done