clippy: remove a loop{} which never actually loops

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/client/pipe_to_stream.rs

@@ -30,7 +30,6 @@ impl Future for PipeToSendStream {
     fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
         let this = self.get_mut();
 
-        loop {
         if this.data != None {
             // just reserve 1 byte to make sure there's some
             // capacity available. h2 will handle the capacity
@@ -71,4 +70,3 @@ impl Future for PipeToSendStream {
         }
     }
 }
-}