Remove build() method

django_forms_as_jsonschema/jsonschema.py

-import copy
-import json
-
 from django import forms
 
 
@@ -69,9 +66,6 @@ class JSONSchema:
     #     }
     # }
 
-    def build(self):
-        return json.dumps(self.schema)
-
     def add_field(self, name, field):
         type_ = "string"
         format_ = None