Syntax error Method xxx have been already implemented in another class yyy
I have a case where the sub class is created using the super class. In sub class by mistake the implementation of a method is done even though the method is already implemented is done in super class. The class was activated forcefully. when try to test the functionality its dumping with the syntax error "Method XXX has already been implemented in class yyy". Now I would like to know how to delete the sub class implementation. I am very new to OOPS, I could not find any way to do this?
Please help me in this.