Remove positional and unnecessary arguments on get_queryset calls.

A number of API handlers were passing positional arguments to
get_queryset, such as the review_request_id. Most of these arguments
weren't even necessary to explicitly pull out of kwargs and pass, since
we're passing kwargs directly.

The problem with positional arguments in these calls is that things get
messed up if a get_queryset or get_object implementation wants to
declare some other parameter before args and kwargs. The wrong value
would get passed for the wrong argument.