I think these queries have excellent results on lgtm.com. Many of the
results come from projects that use `sprintf` like it's a templating
engine, trusting that values from `argv` or `getenv` contain the correct
number of `%s`. I think we want to flag that.
The structure of the change note is modeled after 91af51cf46.
All these queries have been deprecated since 2018. There is
unfortunately no way to deprecate a library, but it's been years since
we populated any databases using the VCS library, so nobody should be
using it.
