message: updated autheticators file
diff: @@ -13,10 +13,10 @@ pub struct PasswordAuthenticator<'a> {
  impl<'a> PasswordAuthenticator<'a> {
  pub fn new<'b>(username: &'b str, password: &'b str) -> PasswordAuthenticator<'b> {
  - return PasswordAuthenticator {
  + PasswordAuthenticator {
  username: username,
  password: password,
  - };
  + }
  }
  }
  @@ -27,11 +27,11 @@ impl<'a> Authenticator for PasswordAuthenticator<'a> {
  token.push(0);
  token.extend_from_slice(self.password.as_bytes());
  - return CBytes::new(token);
  + CBytes::new(token)
  }
  fn get_cassandra_name(&self) -> Option<&str> {
  - return Some("org.apache.cassandra.auth.PasswordAuthenticator");
  + Some("org.apache.cassandra.auth.PasswordAuthenticator")
  }
  }
  @@ -41,11 +41,11 @@ pub struct NoneAuthenticator;
  impl Authenticator for NoneAuthenticator {
  fn get_auth_token(&self) -> CBytes {
  - return CBytes::new(vec![0]);
  + CBytes::new(vec![0])
  }
  fn get_cassandra_name(&self) -> Option<&str> {
  - return None;
  + None
  }
  }
  