Revert "add exit?"
Revert "add exit?"

This reverts commit acdb61b9a981f244e9122122ebd7a948e2f71e04.

hms-dbmi/fourfront,hms-dbmi/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront