Don't optimize.

Author: fire

src/gltf/Raw2Gltf.cpp

@@ -156,12 +156,6 @@ ModelData* Raw2Gltf(
     for (int i = 0; i < raw.GetAnimationCount(); i++) {
       const RawAnimation& animation = raw.GetAnimation(i);
 
-      if (animation.channels.size() == 0) {
-        fmt::printf(
-            "Warning: animation '%s' has zero channels. Skipping.\n", animation.name.c_str());
-        continue;
-      }
-
       auto accessor = gltf->AddAccessorAndView(buffer, GLT_FLOAT, animation.times);
       accessor->min = {*std::min_element(std::begin(animation.times), std::end(animation.times))};
       accessor->max = {*std::max_element(std::begin(animation.times), std::end(animation.times))};