要删除Alfresco内容存储，可以使用Alfresco的API来实现。以下是一个使用Java代码示例：

import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class AlfrescoContentDeleteExample {

    public static void main(String[] args) {
        // 加载Spring配置文件
        ApplicationContext context = new ClassPathXmlApplicationContext("classpath:alfresco/application-context.xml");

        // 获取ServiceRegistry bean
        ServiceRegistry serviceRegistry = (ServiceRegistry) context.getBean("ServiceRegistry");

        // 获取NodeService bean
        NodeService nodeService = serviceRegistry.getNodeService();

        // 要删除的内容的NodeRef
        String contentNodeRefStr = "workspace://SpacesStore/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
        NodeRef contentNodeRef = new NodeRef(contentNodeRefStr);

        // 删除内容
        if (nodeService.exists(contentNodeRef)) {
            nodeService.deleteNode(contentNodeRef);
            System.out.println("Content deleted successfully.");
        } else {
            System.out.println("Content does not exist.");
        }
    }
}

请注意，上述示例假设已经在classpath中设置了正确的application-context.xml文件，其中包含Alfresco的配置信息。您需要根据您的环境进行相应的配置。还要将xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx替换为要删除的内容的实际NodeRef。