Fix 1 ErrorProneStyle finding:

* These grouping parentheses are unnecessary; it is unlikely the code will be misinterpreted without them

PiperOrigin-RevId: 417988060

libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/PlayerEmsgHandler.java

@@ -137,7 +137,7 @@ public final class PlayerEmsgHandler implements Handler.Callback {
       return true;
     }
     switch (message.what) {
-      case (EMSG_MANIFEST_EXPIRED):
+      case EMSG_MANIFEST_EXPIRED:
         ManifestExpiryEventInfo messageObj = (ManifestExpiryEventInfo) message.obj;
         handleManifestExpiredMessage(
             messageObj.eventTimeUs, messageObj.manifestPublishTimeMsInEmsg);