docs(useWebSocket): remove invalid type definition in demo (#2739)

Co-authored-by: 丶远方 <pantengyang@cybstar.com>

packages/core/useWebSocket/index.md

@@ -78,107 +78,6 @@ const { status, data, close } = useWebSocket('ws://websocketurl', {
 })
 ```
 
-<!--FOOTER_STARTS-->
-## Type Declarations
-
-```typescript
-export declare type WebSocketStatus = "OPEN" | "CONNECTING" | "CLOSED"
-export interface WebSocketOptions {
-  onConnected?: (ws: WebSocket) => void
-  onDisconnected?: (ws: WebSocket, event: CloseEvent) => void
-  onError?: (ws: WebSocket, event: Event) => void
-  onMessage?: (ws: WebSocket, event: MessageEvent) => void
-  /**
-   * Send heartbeat for every x mileseconds passed
-   *
-   * @default false
-   */
-  heartbeat?:
-    | boolean
-    | {
-        /**
-         * Message for the heartbeat
-         *
-         * @default 'ping'
-         */
-        message?: string | ArrayBuffer | Blob
-        /**
-         * Interval, in mileseconds
-         *
-         * @default 1000
-         */
-        interval?: number
-      }
-  /**
-   * Enabled auto reconnect
-   *
-   * @default false
-   */
-  autoReconnect?:
-    | boolean
-    | {
-        /**
-         * Maximum retry times.
-         *
-         * @default -1
-         */
-        retries?: number
-        /**
-         * Delay for reconnect, in mileseconds
-         *
-         * @default 1000
-         */
-        delay?: number
-        /**
-         * On maximum retry times reached.
-         */
-        onFailed?: Fn
-      }
-}
-export interface WebSocketResult<T> {
-  /**
-   * Reference to the latest data received via the websocket,
-   * can be watched to respond to incoming messages
-   */
-  data: Ref<T | null>
-  /**
-   * The current websocket status, can be only one of:
-   * 'OPEN', 'CONNECTING', 'CLOSED'
-   */
-  status: Ref<WebSocketStatus>
-  /**
-   * Closes the websocket connection gracefully.
-   */
-  close: WebSocket["close"]
-  /**
-   * Reopen the websocket connection.
-   * If there the current one is active, will close it before opening a new one.
-   */
-  open: Fn
-  /**
-   * Sends data through the websocket connection.
-   *
-   * @param data
-   * @param useBuffer when the socket is not yet open, store the data into the buffer and sent them one connected. Default to true.
-   */
-  send: (data: string | ArrayBuffer | Blob, useBuffer?: boolean) => boolean
-  /**
-   * Reference to the WebSocket instance.
-   */
-  ws: Ref<WebSocket | undefined>
-}
-/**
- * Reactive WebSocket client.
- *
- * @see   {@link https://vueuse.org/useWebSocket}
- * @param url
- */
-export declare function useWebSocket<Data = any>(
-  url: MaybeComputedRef<string | URL | undefined>,
-  options?: WebSocketOptions
-): WebSocketResult<Data>
-```
-
 ### Sub-protocols
 
 List of one or more subprotocols to use, in this case soap and wamp.