Remove unused methods or raise exceptions
Remove unused methods or raise exceptions

Remove methods __setup__ that is unused which can be added in should the
argparse subcommand functionality be moved into the object. Ensure that
remaining functions that are both undefined and unused, but are expected
to be used in the future raise NotImplementedError exceptions.

Remove unused find method.

Change-Id: I728435e7950c641ff5f21a091107410bc2751d64
JIRA: CICD-260

emonty/git-upstream,dguerri/git-upstream-old,emonty/git-upstream,stackforge/git-upstream,stackforge/git-upstream,dguerri/git-upstream-old