message: remove another instance of `using namespace std`
diff: @@ -1011,7 +1011,6 @@ void extractCubemapFaces(const utils::Path& iname, const Cubemap& cm, const util
  }
  if (g_type == OutputType::KTX) {
  - using namespace std;
  const uint32_t dim = cm.getDimensions();
  KtxBundle container(1, 1, true);
  container.info() = {
  @@ -1026,11 +1025,11 @@ void extractCubemapFaces(const utils::Path& iname, const Cubemap& cm, const util
  .pixelDepth = 0,
  };
  exportKtxFaces(container, 0, cm);
  - string filename = iname.getNameWithoutExtension() + "_skybox.ktx";
  + std::string filename = iname.getNameWithoutExtension() + "_skybox.ktx";
  auto fullpath = outputDir + filename;
  - vector<uint8_t> fileContents(container.getSerializedLength());
  + std::vector<uint8_t> fileContents(container.getSerializedLength());
  container.serialize(fileContents.data(), fileContents.size());
  - ofstream outputStream(fullpath.c_str(), ios::out | ios::binary);
  + std::ofstream outputStream(fullpath.c_str(), std::ios::out | std::ios::binary);
  outputStream.write((const char*) fileContents.data(), fileContents.size());
  outputStream.close();
  return;
  