[PATCH 10/19] rust: sync: remove unneeded `#[allow(clippy::non_send_fields_in_send_ty)]`

[Miguel Ojeda]

Rust 1.58.0 (before Rust was merged into the kernel) made Clippy's
`non_send_fields_in_send_ty` lint part of the `suspicious` lint group for
a brief window of time [1] until the minor version 1.58.1 got released
a week after, where the lint was moved back to `nursery`.

By that time, we had already upgraded to that Rust version, and thus we
had `allow`ed the lint here for `CondVar`.

Nowadays, Clippy's `non_send_fields_in_send_ty` would still trigger here
if it were enabled.

Moreover, if enabled, `Lock<T, B>` and `Task` would also require an
`allow`. Therefore, it does not seem like someone is actually enabling it
(in, e.g., a custom flags build).

Finally, the lint does not appear to have had major improvements since
then [2].

Thus remove the `allow` since it is unneeded.

Link: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1581-2022-01-20 [1]
Link: https://github.com/rust-lang/rust-clippy/issues/8045 [2]
Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
---
 rust/kernel/sync/condvar.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/rust/kernel/sync/condvar.rs b/rust/kernel/sync/condvar.rs
index 7e00048bf4b1..dec2e5ffc919 100644
--- a/rust/kernel/sync/condvar.rs
+++ b/rust/kernel/sync/condvar.rs
@@ -92,7 +92,6 @@ pub struct CondVar {
     _pin: PhantomPinned,
 }
 
-#[allow(clippy::non_send_fields_in_send_ty)]
 // SAFETY: `CondVar` only uses a `struct wait_queue_head`, which is safe to use on any thread.
 unsafe impl Send for CondVar {}
 
-- 
2.46.0