Remove erroneous "set display_name"
Remove erroneous "set display_name"

The standard loop covers display_name, this line erroneously set the
display_name to be url_name

jefrench/latex2edx,evheubel/latex2edx,jefrench/latex2edx,evheubel/latex2edx,jefrench/latex2edx,mitocw/latex2edx,mitocw/latex2edx,mitocw/latex2edx,evheubel/latex2edx