docs: undocument private constructors (#6732)

src/structures/MessageReaction.js

@@ -9,11 +9,6 @@ const Util = require('../util/Util');
  * Represents a reaction to a message.
  */
 class MessageReaction {
-  /**
-   * @param {Client} client The instantiating client
-   * @param {APIReaction} data The data for the message reaction
-   * @param {Message} message The message the reaction refers to
-   */
   constructor(client, data, message) {
     /**
      * The client that instantiated this message reaction
@@ -134,8 +129,3 @@ class MessageReaction {
 }
 
 module.exports = MessageReaction;
-
-/**
- * @external APIReaction
- * @see {@link https://discord.com/developers/docs/resources/channel#reaction-object}
- */