Trying to find an elegant way to do this..

ClassArray = [MyClass1, CoolClass2, GreatClass3]

Objs_array = [objclass1, objclass3]

I want to delete any classes in ClassArray that are not included
in the ojects classes loaded in objs_array.

Hope this makes sense, so for above example should
equal this after processing

ClassArray should = [MyClass1, GreatClass3]