remove bson & pandora support

hydro/service/cron.js

@@ -1,33 +0,0 @@
-class Cron {
-    constructor() {
-        this.tasks = [];
-    }
-
-    plan(time, task) {
-        const now = new Date();
-        if (!(time instanceof Date)) time = new Date(time);
-        this.tasks.push({
-            id: setTimeout(() => {
-                for (const i in this.tasks) {
-                    if (this.tasks[i].func === task) {
-                        this.tasks.splice(i, 1);
-                        break;
-                    }
-                }
-                task();
-            }, time - now),
-            func: task,
-        });
-    }
-
-    interval(time, task) {
-        const now = new Date();
-        if (!(time instanceof Date)) time = new Date(time);
-        this.tasks.push({
-            id: setTimeout(() => { task(); }, time - now),
-            func: task,
-        });
-    }
-}
-
-module.exports = Cron;

hydro/service/server.js

@@ -2,7 +2,7 @@ const assert = require('assert');
 const path = require('path');
 const os = require('os');
 const _ = require('lodash');
-const { ObjectID } = require('bson');
+const { ObjectID } = require('mongodb');
 const Koa = require('koa');
 const yaml = require('js-yaml');
 const morgan = require('koa-morgan');