chore: unify all mocked `loom` files (#1732)

When the crates were merged, each component kept its own `loom` file
containing mocked types it needed. This patch unifies them all in one
location.

1 files changed, 3 insertions, 1 deletions

diff --git a/tokio/src/sync/oneshot.rs b/tokio/src/sync/oneshot.rs
index 7cf4eb8f..3c757e9e 100644
--- a/tokio/src/sync/oneshot.rs
+++ b/tokio/src/sync/oneshot.rs
@@ -1,6 +1,8 @@
 //! A channel for sending a single message between asynchronous tasks.
 
-use crate::sync::loom::sync::{atomic::AtomicUsize, Arc, CausalCell};
+use crate::loom::cell::CausalCell;
+use crate::loom::sync::atomic::AtomicUsize;
+use crate::loom::sync::Arc;
 
 use futures_core::ready;
 use std::fmt;