Drop bitflags workaround

Author: 197g

.github/workflows/rust.yml

@@ -50,7 +50,6 @@ jobs:
  run: |
  cargo -Zminimal-versions generate-lockfile
  cargo update --offline num-bigint --precise 0.4.2
- cargo update --offline bitflags:1.0.0 --precise 1.3.2
 
  - uses: dtolnay/rust-toolchain@v1
  with: