This is what custom filters are for.
For example, if you append &filter=!BGRhem4Z)WIti9lP55R*tgr(Jq_fHC to your query, above, you will get results without upvote_count, downvote_count, or owner information. (The first two aren't included by default anyway.)
An easy way to create a filter is to use the filter-edit tool, on the appropriate doc page for the path you are using. :
(Sample image of tool follows. It is not specific to this question)
