message: Remove unstable CLI option
diff: @@ -356,7 +356,6 @@ pub struct CliUnstable {
  pub crate_versions: bool,
  pub separate_nightlies: bool,
  pub multitarget: bool,
  - pub strip: bool,
  }
  impl CliUnstable {
  @@ -436,7 +435,6 @@ impl CliUnstable {
  "crate-versions" => self.crate_versions = parse_empty(k, v)?,
  "separate-nightlies" => self.separate_nightlies = parse_empty(k, v)?,
  "multitarget" => self.multitarget = parse_empty(k, v)?,
  - "strip" => self.strip = parse_empty(k, v)?,
  _ => bail!("unknown `-Z` flag specified: {}", k),
  }
  