Implement the Unimplemented Method: "globalPropertyDeleted(String propertyName)"

Issue on TODOs
Line 607 of AdministrationServiceImpl.java
https://github.com/openmrs/openmrs-core/blob/master/api/src/main/java/org/openmrs/api/impl/AdministrationServiceImpl.java#L607 contains this TODO.
This TODO "Auto-generated method stub" is located in the globalPropertyDeleted(String propertyName) method with the indicated parameter. However, the parameter is not used and the method body has no implementation at all. The method is called after a global property is deleted , but it seems to do nothing as it stands now. It's against this observation, that I suggest the deletion of this method together with the TODO.