Fix linter lifetime elision warnings

Signed-off-by: Tomasz Pietrek <tomasz@nats.io>

Author: Jarema

async-nats/src/connection.rs

@@ -666,7 +666,7 @@ impl Connection {
             this: &'a mut Connection,
         }
 
-        impl<'a> fmt::Write for Writer<'a> {
+        impl fmt::Write for Writer<'_> {
             fn write_str(&mut self, s: &str) -> fmt::Result {
                 self.this.write_buf_len += s.len();
                 self.this.flattened_writes.write_str(s)

async-nats/src/jetstream/consumer/pull.rs

@@ -330,7 +330,7 @@ pub struct Batch {
     terminated: bool,
 }
 
-impl<'a> Batch {
+impl Batch {
     async fn batch(batch: BatchConfig, consumer: &Consumer<Config>) -> Result<Batch, BatchError> {
         let inbox = Subject::from(consumer.context.client.new_inbox());
         let subscription = consumer.context.client.subscribe(inbox.clone()).await?;

async-nats/src/lib.rs

@@ -475,7 +475,7 @@ impl ConnectionHandler {
             Closed,
         }
 
-        impl<'a> ProcessFut<'a> {
+        impl ProcessFut<'_> {
             const RECV_CHUNK_SIZE: usize = 16;
 
             #[cold]
@@ -497,7 +497,7 @@ impl ConnectionHandler {
             }
         }
 
-        impl<'a> Future for ProcessFut<'a> {
+        impl Future for ProcessFut<'_> {
             type Output = ExitReason;
 
             /// Drives the connection forward.