Drop unused exceptions
Drop unused exceptions

Change-Id: I6f29007872c1c66426b93a82494ca9d5bb5b4e4b
Reviewed-by: Fred Barnes <a457b66771fa7031f08927d92d89014c238c08f7@morganstanley.com>

quattor/aquilon,quattor/aquilon,quattor/aquilon