Remove response code doc because it got added elsewhere

Jellyfin.Api/Controllers/AudioController.cs

@@ -146,7 +146,6 @@ namespace Jellyfin.Api.Controllers
         /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
         /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
         /// <param name="streamOptions">Optional. The streaming options.</param>
-        /// <response code="200">Audio file returned.</response>
         /// <returns>A <see cref="FileResult"/> containing the audio file.</returns>
         [HttpGet("{itemId}/{stream=stream}.{container?}")]
         [HttpGet("{itemId}/stream")]