Do not save an xblock after rendering the Studio view.

TNL-399

Content and settings are no longer saved when Studio view is rendered.

cms/djangoapps/contentstore/views/item.py

@@ -225,7 +225,6 @@ def xblock_view_handler(request, usage_key_string, view_name):
                 log.debug("unable to render studio_view for %r", xblock, exc_info=True)
                 fragment = Fragment(render_to_string('html_error.html', {'message': str(exc)}))
 
-            store.update_item(xblock, request.user.id)
         elif view_name in (PREVIEW_VIEWS + container_views):
             is_pages_view = view_name == STUDENT_VIEW   # Only the "Pages" view uses student view in Studio