RabbitMQ is enabled by default in the template. This service is optional but recommended. It can be disabled and replaced by an SQL-backed queue.
Comment out the RabbitMQ service configuration.
// .platform/services.yaml #rabbitmq: # type: rabbitmq:3.8 # disk: 1024
Comment out the relationship for the app configuration.
// .platform.app.yaml #relationships: # rabbitmqqueue: "rabbitmq:rabbitmq"
Push the changes to your git repository and wait for the deployment to finish.