removed abstract trees

Author: xiaodaigh

Project.toml

@@ -4,7 +4,6 @@ authors = ["ZJ <zhuojia.dai@gmail.com>"]
 version = "0.1.0"
 
 [deps]
-AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
 Cascadia = "54eefc05-d75b-58de-a785-1a3403f0919f"
 Gumbo = "708ec375-b3d6-5a57-a7ce-8257bf98657a"
 HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"