message: Don't return +ubsan from build_dir_san_suffix when building with
  ASAN enabled; we don't build swift/clang/llvm with a different
  configuration so we shouldn't add this to the build path for
  those.
diff: @@ -28,8 +28,6 @@ def building_with_ubsan_enabled():
  def build_dir_san_suffix():
  if building_with_asan_enabled():
  return "+asan"
  - elif building_with_ubsan_enabled():
  - return "+ubsan"
  else:
  return ""
  