refactor: 移除 calculateDailyNav API 定义

utils/api.js

@@ -381,15 +381,6 @@ export const api = {
     backfillNavHistory: (id, force = false) => {
       console.log('📤 发起 backfillNavHistory 请求:', id, { force });
       return post(`/api/v1/portfolio/${id}/nav-history/backfill`, {}, { force });
-    },
-    /**
-     * 计算投资组合当日净值
-     * @param {string|number} id - 投资组合ID
-     * @returns {Promise} 返回计算结果
-     */
-    calculateDailyNav: (id) => {
-      console.log('📤 发起 calculateDailyNav 请求:', id);
-      return post(`/api/v1/portfolio/${id}/nav-history/calculate`);
     }
   },