Comment 15 for bug 228183

FWIW, I agree with Sarah Hobbs and Brian Murray wrote above. I don't think reportbug should be removed.
- it's useful to Ubuntu developers.
- removing it won't solve the problem for users who already have it installed.

so it should be "fixed", by adding a message that says that it mustn't be used to report bugs against Ubuntu.
possible pseudo-code:
if not file.exists?("$HOME/.i_really_want_to_use_reportbug")
    print("blurb about reportbug not being useful for reporting bugs in Ubuntu, and link to LP")
    exit(1)
endif

Doesn't sound like rocket science.