Merge pull request #387 from mindsdb/agent-model-opt

Model of an agent is optional

mindsdb_sql/parser/dialects/mindsdb/parser.py

@@ -164,7 +164,7 @@ def create_agent(self, p):
 
         return CreateAgent(
             name=p.identifier,
-            model=params.pop('model'),
+            model=params.pop('model', None),
             params=params,
             if_not_exists=p.if_not_exists_or_empty
         )