Remove artplayer-proxy-webav package and its related files including package.json, index.js, and type definitions.

docs/assets/example/webav.js

@@ -1,31 +0,0 @@
-// From: https://github.com/bilibili/WebAV
-// npm i artplayer-proxy-webav
-// import artplayerProxyWebAV from 'artplayer-proxy-webav';
-
-var art = new Artplayer({
-    container: '.artplayer-app',
-    url: '/assets/sample/bbb-video.mp4',
-    volume: 0.5,
-    autoplay: false,
-    autoSize: false,
-    screenshot: true,
-    setting: true,
-    loop: true,
-    flip: true,
-    playbackRate: true,
-    aspectRatio: true,
-    fullscreen: true,
-    fullscreenWeb: true,
-    miniProgressBar: true,
-    autoPlayback: true,
-    thumbnails: {
-        url: '/assets/sample/bbb-sprite.jpg',
-        number: 121,
-        column: 11,
-        width: 128,
-        height: 72,
-    },
-    proxy: artplayerProxyWebAV({
-        //
-    }),
-});