>Question..... is there any way to modify or remove the HELP menu at the right
>side of the Menu Bar when running an app under OS 8.x?

Yes, but it is very bad manners, and the interface cops will get you if 
you do it.

There is nothing new or amazing about the help menu - it is just the 
balloon help menu from System 7 (that, amazingly enough, many people 
simply failed to see).

-Mars