Remove extra RAML schema

raml/schemas/input/container.json

-{
-    "$schema": "http://json-schema.org/draft-04/schema#",
-    "type": "object",
-    "properties": {
-        "_id":          {"$ref":"../definitions/container.json#/definitions/_id"},
-        "public":       {"$ref":"../definitions/container.json#/definitions/public"},
-        "label":        {"$ref":"../definitions/container.json#/definitions/label"},
-        "info":         {"$ref":"../definitions/container.json#/definitions/info"}
-    }
-}