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

docs/index.html

@@ -118,10 +118,6 @@
                             <a
                                 href="/?libs=./uncompiled/artplayer-proxy-canvas/index.js&example=canvas">artplayer-proxy-canvas</a>
                         </li>
-                        <li>
-                            <a
-                                href="/?libs=./uncompiled/artplayer-proxy-webav/index.js&example=webav">artplayer-proxy-webav</a>
-                        </li>
                     </ul>
                     <ul>
                         <li class="title">Tools</li>