chore: remove unnecessary conversion (#1332)

tokio-fs/src/file/create.rs

@@ -35,6 +35,6 @@ where
         let std = ready!(crate::blocking_io(|| StdFile::create(&self.path)))?;
 
         let file = File::from_std(std);
-        Poll::Ready(Ok(file.into()))
+        Poll::Ready(Ok(file))
     }
 }

tokio-fs/src/file/metadata.rs

@@ -36,6 +36,6 @@ impl Future for MetadataFuture {
         let metadata = ready!(crate::blocking_io(|| StdFile::metadata(inner.std())))?;
 
         let file = inner.file.take().expect(POLL_AFTER_RESOLVE);
-        Poll::Ready(Ok((file, metadata).into()))
+        Poll::Ready(Ok((file, metadata)))
     }
 }

tokio-fs/src/file/open.rs

@@ -36,6 +36,6 @@ where
         let std = ready!(crate::blocking_io(|| self.options.open(&self.path)))?;
 
         let file = File::from_std(std);
-        Poll::Ready(Ok(file.into()))
+        Poll::Ready(Ok(file))
     }
 }

tokio-fs/src/file/seek.rs

@@ -35,6 +35,6 @@ impl Future for SeekFuture {
             .expect("Cannot poll `SeekFuture` after it resolves")
             .poll_seek(inner_self.pos))?;
         let inner = inner_self.inner.take().unwrap();
-        Poll::Ready(Ok((inner, pos).into()))
+        Poll::Ready(Ok((inner, pos)))
     }
 }

tokio-timer/src/timer/atomic_stack.rs

@@ -34,7 +34,7 @@ impl AtomicStack {
     /// on the stack, `Err` if the timer is shutdown.
     pub fn push(&self, entry: &Arc<Entry>) -> Result<bool, Error> {
         // First, set the queued bit on the entry
-        let queued = entry.queued.fetch_or(true, SeqCst).into();
+        let queued = entry.queued.fetch_or(true, SeqCst);
 
         if queued {
             // Already queued, nothing more to do

tokio-timer/src/timer/entry.rs

@@ -302,7 +302,7 @@ impl Entry {
 
         self.waker.register_by_ref(cx.waker());
 
-        curr = self.state.load(SeqCst).into();
+        curr = self.state.load(SeqCst);
 
         if is_elapsed(curr) {
             return Poll::Ready(if curr == ERROR {

tokio-tls/src/lib.rs

@@ -194,7 +194,7 @@ where
         match self.with_context(ctx, |s| s.shutdown()) {
             Ok(()) => Poll::Ready(Ok(())),
             Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => return Poll::Pending,
-            Err(e) => return Poll::Ready(Err(e.into())),
+            Err(e) => return Poll::Ready(Err(e)),
         }
     }
 }