💥 remove built-in scheduler support

docs/.vuepress/config.js

@@ -130,9 +130,7 @@ module.exports = context => ({
               title: "发布",
               collapsable: false,
               sidebar: "auto",
-              children: [
-                "publish-plugin"
-              ]
+              children: ["publish-plugin"]
             }
           ],
           "/api/": [
@@ -169,10 +167,6 @@ module.exports = context => ({
                   title: "nonebot.permission 模块",
                   path: "permission"
                 },
-                {
-                  title: "nonebot.sched 模块",
-                  path: "sched"
-                },
                 {
                   title: "nonebot.log 模块",
                   path: "log"

docs/api/README.md

@@ -25,9 +25,6 @@
     * [nonebot.permission](permission.html)
 
 
-    * [nonebot.sched](sched.html)
-
-
     * [nonebot.log](log.html)
 
 

docs/api/config.md

@@ -283,17 +283,3 @@ SESSION_EXPIRE_TIMEOUT=120  # 单位: 秒
 SESSION_EXPIRE_TIMEOUT=[DD ][HH:MM]SS[.ffffff]
 SESSION_EXPIRE_TIMEOUT=P[DD]DT[HH]H[MM]M[SS]S  # ISO 8601
 ```
-
-
-### `apscheduler_config`
-
-
-* **类型**: `dict`
-
-
-* **默认值**: `{"apscheduler.timezone": "Asia/Shanghai"}`
-
-
-* **说明**
-
-    APScheduler 的配置对象，见 [Configuring the Scheduler](https://apscheduler.readthedocs.io/en/latest/userguide.html#configuring-the-scheduler)

docs/api/sched.md

@@ -1,41 +0,0 @@
----
-contentSidebar: true
-sidebarDepth: 0
----
-
-# NoneBot.sched 模块
-
-## 计划任务
-
-计划任务使用第三方库 [APScheduler](https://github.com/agronholm/apscheduler) ，使用文档请参考 [APScheduler使用文档](https://apscheduler.readthedocs.io/en/latest/) 。
-
-
-## `scheduler`
-
-
-* **类型**
-
-    `Optional[apscheduler.schedulers.asyncio.AsyncIOScheduler]`
-
-
-
-* **说明**
-
-    当可选依赖 `APScheduler` 未安装时，`scheduler` 为 None
-
-    使用 `pip install nonebot[scheduler]` 安装可选依赖
-
-
-
-* **常用示例**
-
-
-```python
-from nonebot import scheduler
-
-@scheduler.scheduled_job("cron", hour="*/2", id="xxx", args=[1], kwargs={arg2: 2})
-async def run_every_2_hour(arg1, arg2):
-    pass
-
-scheduler.add_job(run_every_day_from_program_start, "interval", days=1, id="xxx")
-```