added IsTemplate column

Author: andrewelamb

tests/unit/synapseclient/extensions/schema_files/data_models_jsonld/example.model.jsonld

@@ -39,7 +39,6 @@
             },
             "sms:displayName": "Patient",
             "sms:required": "sms:false",
-            "sms:IsTemplate": "sms:true",
             "sms:requiresDependency": [
                 {
                     "@id": "bts:PatientID"