refactor(common): 移除通用响应类

- 删除了 GenericResponse 类及其所有构造方法
- 移除了与 ResponseCode 枚举的关联逻辑
- 清理了相关的泛型数据封装结构

src/main/java/cn/xf/basedemo/common/exception/GenericResponse.java

@@ -1,47 +0,0 @@
-package cn.xf.basedemo.common.exception;
-
-import lombok.Data;
-
-/**
- * @Author: xiongfeng
- * @CreateTime: 2023-11-08  13:47
- * @Description: TODO
- * @Version: 1.0
- */
-@Data
-public class GenericResponse<T> {
-    private int code;
-
-    private T data;
-
-    private String message;
-
-    public GenericResponse() {};
-
-    public GenericResponse(int code, T data) {
-        this.code = code;
-        this.data = data;
-    }
-
-    public GenericResponse(int code, T data, String message) {
-        this(code, data);
-        this.message = message;
-    }
-
-    public GenericResponse(ResponseCode responseCode) {
-        this.code = responseCode.getCode();
-        this.data = null;
-        this.message = responseCode.getMessage();
-    }
-
-    public GenericResponse(ResponseCode responseCode, T data) {
-        this(responseCode);
-        this.data = data;
-    }
-
-    public GenericResponse(ResponseCode responseCode, T data, String message) {
-        this(responseCode, data);
-        this.message = message;
-    }
-
-}