Mend duplicate nodes in the gltf export.

modules/gltf/gltf_document.cpp

@@ -6945,15 +6945,6 @@ Error GLTFDocument::append_from_scene(Node *p_node, Ref<GLTFState> state, uint32
 	state->use_named_skin_binds = p_flags & GLTF_IMPORT_USE_NAMED_SKIN_BINDS;
 	state->discard_meshes_and_materials = p_flags & GLTF_IMPORT_DISCARD_MESHES_AND_MATERIALS;
 
-	_convert_scene_node(state, p_node, -1, -1);
-	if (!state->buffers.size()) {
-		state->buffers.push_back(Vector<uint8_t>());
-	}
-	for (int32_t ext_i = 0; ext_i < document_extensions.size(); ext_i++) {
-		Ref<GLTFDocumentExtension> ext = document_extensions[ext_i];
-		ERR_CONTINUE(ext.is_null());
-	}
-
 	for (int32_t ext_i = 0; ext_i < document_extensions.size(); ext_i++) {
 		Ref<GLTFDocumentExtension> ext = document_extensions[ext_i];
 		ERR_CONTINUE(ext.is_null());
@@ -6964,7 +6955,6 @@ Error GLTFDocument::append_from_scene(Node *p_node, Ref<GLTFState> state, uint32
 	if (!state->buffers.size()) {
 		state->buffers.push_back(Vector<uint8_t>());
 	}
-
 	return OK;
 }