message: Remove unneeded verbose flag.
diff: @@ -65,7 +65,7 @@ fn build_script_extra_link_arg_warn_without_flag() {
  )
  .build();
  - p.cargo("build -vv")
  + p.cargo("build -v")
  .with_status(0)
  .with_stderr_contains("warning: cargo:rustc-link-arg requires -Zextra-link-arg flag")
  .run();
  