fix: disable spark

It's not very useful for a server like kaboom and there's
too many commands we'd need to block.

config/paper-global.yml

@@ -132,7 +132,7 @@ spam-limiter:
   tab-spam-limit: 500
 spark:
   enable-immediately: false
-  enabled: true
+  enabled: false
 unsupported-settings:
   allow-headless-pistons: true
   allow-permanent-block-break-exploits: true

plugins/spark/config.json

@@ -1,4 +0,0 @@
-{
-  "_header": "spark configuration file - https://spark.lucko.me/docs/Configuration",
-  "backgroundProfiler": true
-}