Scintilla related packaging problems

I have a simple PIM application (for tutorial purposes) that I am trying to package. It's been a few years since I last resolved packaging errors, so I am rusty at it.

I am seeing a number of OSScintillaEditor methods being included because the class itself has direct references from the (sub)application's loaded and start-up code. Because the class is included, there are a number of methods with the same names as other methods that need to be packaged, but these methods don't have implementors for some of the sent methods. e.g. OSScintillaEditor>>#processCharacter: sends #getReadonly, but that method is defined in the "owner" (CW) class which is properly excluded from packaging.

Since I don't use Scintilla in this application, how should I exclude it? Is there an easy way to exclude the SubApplication called #CwWinScintillaSupport from packaging?