message: Remove unused crossbeam_utils dependency
  crossbeam_utils is currently not used anywhere withing this crate so I propose to remove the dependency to (slightly) reduce compile times
diff: @@ -8,7 +8,6 @@ repository = "https://github.com/salsa-rs/salsa"
  description = "A generic framework for on-demand, incrementalized computation (experimental)"
  [dependencies]
  -crossbeam-utils = { version = "0.8", default-features = false }
  indexmap = "1.0.1"
  lock_api = "0.4"
  log = "0.4.5"
  