tests/test-check-rust-format.t

git: remove obsolete todo item

The changes in 02c47b74366c cleaned up the requirement check.

#require rustfmt test-repo

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

  $ cd "$TESTDIR"/..
  $ RUSTFMT=$(rustup which --toolchain nightly rustfmt)
  $ for f in `testrepohg files 'glob:**/*.rs'` ; do
  >   $RUSTFMT --check --unstable-features --color=never $f
  > done