message: Removes unused setters from netcore::tcp::transport
  Removing set_recv_buffer_size from network/netcore/src/transport/tcp.rs
  Removing set_send_buffer_size from network/netcore/src/transport/tcp.rs
  Removing set_ttl from network/netcore/src/transport/tcp.rs
  Removing set_keepalive from network/netcore/src/transport/tcp.rs
  Removing set_nodelay from network/netcore/src/transport/tcp.rs
  Closes:
  Approved by: zamsden
diff: @@ -37,31 +37,6 @@ pub struct TcpTransport {
  }
  impl TcpTransport {
  - pub fn set_recv_buffer_size(mut self, size: usize) -> Self {
  - self.recv_buffer_size = Some(size);
  - self
  - }
  -
  - pub fn set_send_buffer_size(mut self, size: usize) -> Self {
  - self.send_buffer_size = Some(size);
  - self
  - }
  -
  - pub fn set_ttl(mut self, ttl: u32) -> Self {
  - self.ttl = Some(ttl);
  - self
  - }
  -
  - pub fn set_keepalive(mut self, keepalive: Option<Duration>) -> Self {
  - self.keepalive = Some(keepalive);
  - self
  - }
  -
  - pub fn set_nodelay(mut self, nodelay: bool) -> Self {
  - self.nodelay = Some(nodelay);
  - self
  - }
  -
  fn apply_config(&self, stream: &TcpStream) -> ::std::io::Result<()> {
  if let Some(size) = self.recv_buffer_size {
  stream.set_recv_buffer_size(size)?;
  