Remove rustfmt

Author: matthiasgoergens

.github/workflows/ci.yml

@@ -65,7 +65,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: dtolnay/rust-toolchain@master
         with:
-          components: rustfmt
           # TODO(Matthias): see whether we can keep this in sync with rust-toolchain.toml automatically?
           toolchain: nightly-2024-10-03
       - name: Cargo cache