Minor code cleanup including: 1. display meaningful warning if lock file cannot be deleted 2. use faster method calls 3. remove unused method parameters These changes can be viewed at https://gitlab.com/743zpnpGUq27GgR/exonerator/-/commits/small-cleanup or cloned via https://gitlab.com/743zpnpGUq27GgR/exonerator.git using branch 'small-cleanup' Feel free to use whatever makes sense and ignore the rest. Thanks! Josh **Trac**: **Username**: efgyirfe784