f unused imports

Author: TheBlueMatt

lightning/src/util/wakers.rs

@@ -15,12 +15,12 @@
 
 use alloc::sync::Arc;
 use core::mem;
-use crate::sync::{Condvar, Mutex, MutexGuard};
+use crate::sync::{Condvar, Mutex};
 
 use crate::prelude::*;
 
 #[cfg(any(test, feature = "std"))]
-use std::time::{Duration, Instant};
+use std::time::Duration;
 
 use core::future::Future as StdFuture;
 use core::task::{Context, Poll};