feat(ai-web): 移除liteflow入参，该用自己实现的流程引擎

service-ai/database/20250702.sql

@@ -52,7 +52,6 @@ create table hudi_collect_build_b12.service_ai_flow_task_template
     created_time  datetime(6) comment '记录创建时间',
     modified_time datetime(6) comment '记录更新时间',
     description   varchar(255) comment '模板功能、内容说明',
-    flow          text         not null comment 'LiteFlow流程表达式',
     flow_graph    longtext comment '前端流程图数据',
     input_schema  longtext     not null comment '模板入参Schema',
     name          varchar(255) not null comment '模板名称',

service-ai/service-ai-web/src/main/java/com/lanyuanxiaoyao/service/ai/web/entity/FlowTaskTemplate.java

@@ -30,9 +30,6 @@ public class FlowTaskTemplate extends SimpleEntity {
   @Comment("模板入参Schema")
   @Column(nullable = false, columnDefinition = "longtext")
   private String inputSchema;
-  @Comment("LiteFlow流程表达式")
-  @Column(nullable = false, columnDefinition = "text")
-  private String flow;
   @Comment("前端流程图数据")
   @Column(columnDefinition = "longtext")
   private String flowGraph;