Basic 3D rendering

editor/editor_node.cpp

@@ -623,8 +623,6 @@ void EditorNode::_notification(int p_what) {
 
 			ResourceImporterTexture::get_singleton()->update_imports();
 
-			// if using a main thread only renderer, we need to update the resource previews
-			EditorResourcePreview::get_singleton()->update();
 		} break;
 
 		case NOTIFICATION_ENTER_TREE: {