Can i install rasa-core only

we’ve predefined intents and entities and called webhooks/rest/webhook API to get the bot response. request body { “sender”:“user-1”, “message”:"/intent{‘entity’:‘value’}" }

As I mentioned above we’re not using rasa NLU at any request So, is it possible to use rasa-core only with rasa-sdk ???

i mean can we remove the rasa-NLU part/implementation to free some space in the docker image?