Remove outdated dependencies/plugins from plugin.yml (#3874)

bukkit/src/main/resources/plugin.yml

@@ -5,8 +5,7 @@ version: ${version}
 description: ${description}
 api-version: 1.13
 folia-supported: true
-loadbefore: [ ProtocolLib, ProxyPipe, SpigotLib, SkinRestorer ]
-softdepend: [ ProtocolSupport, PacketListenerApi ]
+loadbefore: [ ProtocolLib ]
 commands:
   viaversion:
     permission: viaversion.command # The permission is also referenced here to filter root suggestions (/via<tab>)