Deprecate and remove jmespath usage in asdftool diff #1945
Description
asdftool diff is the other place where jmespath is used:
https://github.com/search?q=repo%3Aasdf-format%2Fasdf%20jmespath&type=code
The latest release of jmespath is over 3 years old: https://pypi.org/project/jmespath/
and the package hasn't been updated in over 2 years: https://github.com/jmespath/jmespath.py
I would be curious to hear if anyone is passing -i to asdftool diff and if so are they using any of the more complicated syntax from jmespath.
Finding an alternative that supports the more complicated features seems very unlikely. However perhaps a path regex (or regexes) would be more familiar to most users/developers.