remove jstree

Author: Guite

composer.json

@@ -78,7 +78,6 @@
         "twig/extra-bundle": "^3",
         "twig/intl-extra": "^3",
         "twig/string-extra": "^3",
-        "vakata/jstree": "^3",
         "vich/uploader-bundle": "^2.9"
     },
     "require-dev": {