Merge pull request #10155 from zydecode/zydecode-patch-1

update to mesh.py in Blender exporter to solve normals issue

utils/exporters/blender/addons/io_three/exporter/api/mesh.py

@@ -616,7 +616,6 @@ def normals(mesh):
     normal_vectors = []
 
     for vector in _normals(mesh):
-        vector = (vector[0], vector[2], -vector[1])
         normal_vectors.extend(vector)
 
     return normal_vectors