Remove waterfall from wiki (#114)

Remove waterfall reference.

server-setup.md

@@ -56,7 +56,7 @@ Make sure you follow _all_ steps that match your server's configuration, not jus
       - Vanilla users will see a warning toast in the top right corner and their messages can be reported. To avoid those problems, use one of the plugins/mods below.
 - **Velocity**: set `force-key-authentication` to `false` in _velocity.toml_
   - Same comments apply as for "all 1.19+ backend servers" above.
-- **BungeeCord/Waterfall**: set `enforce_secure_profile` to `false` in _config.yml_
+- **BungeeCord**: set `enforce_secure_profile` to `false` in _config.yml_
   - Same comments apply as for "all 1.19+ backend servers" above.
 - **Paper/Purpur/Pufferfish**: install the [FreedomChat](https://modrinth.com/mod/freedomchat) plugin.
    - Ensure `rewrite-chat` and `send-prevents-chat-reports-to-client` are set to `true` inside the FreedomChat's config file to make FO users see a ![disabled](https://i.ibb.co/QDFzXCT/secure.png) icon near chat.
@@ -84,11 +84,11 @@ Ever wondered, how some servers are able to update the same day a new Minecraft
 
 * **ViaVersion** lets users join with a _newer_ client version. For example, if your server is still using 1.19.2, this will let users join with 1.19.3 and later.
    * By default, ViaVersion allows users to join from your server's Minecraft version up to the latest stable Minecraft version. This can be filtered in the ViaVersion configuration file.
-   * Download for: [Paper/Spigot/Purpur/Velocity/Waterfall](https://hangar.papermc.io/ViaVersion/ViaVersion) | [Fabric/Quilt*](https://www.curseforge.com/minecraft/mc-mods/viafabric) 
+   * Download for: [Paper/Spigot/Purpur/Velocity](https://hangar.papermc.io/ViaVersion/ViaVersion) | [Fabric/Quilt*](https://www.curseforge.com/minecraft/mc-mods/viafabric) 
 * **ViaBackwards** lets users join with an _older_ client version. For example, if your server is using 1.19.4, users can join with 1.19.3 and older.
   * By default, ViaBackwards allows users to join from Minecraft 1.8 up to your server's Minecraft version. This can be filtered in the ViaVersion configuration file.
   * Any new blocks, items and entities will be shown as older types with equivalent properties (like mobs of similar size or blocks of similar breaking speed). Users with newer clients will see them as normal.
-  * Download for: [Paper/Spigot/Purpur/Velocity/Waterfall](https://hangar.papermc.io/ViaVersion/ViaBackwards) | [Fabric/Quilt*](https://www.curseforge.com/minecraft/mc-mods/viabackwards)
+  * Download for: [Paper/Spigot/Purpur/Velocity](https://hangar.papermc.io/ViaVersion/ViaBackwards) | [Fabric/Quilt*](https://www.curseforge.com/minecraft/mc-mods/viabackwards)
 
 Depending on your server, you can choose to use only ViaVersion or both. If your server is hub-based, it is recommended to install the plugin(s) to each backend server and _not_ the proxy itself.