Delete a value from an Automerge document using a path vector.
Examples
doc <- am_create()
am_put_path(doc, c("user", "address", "city"), "NYC")
am_put_path(doc, c("user", "name"), "Alice")
# Delete nested key
am_delete_path(doc, c("user", "address"))
# Address should be gone
am_get_path(doc, c("user", "address")) # NULL
#> NULL