Trying to remove the buttons on the left

I'd like to just have one page with all info on that one page for my server. But when I remove the buttons  on the left in the json file I get this error when I reload the plugin.

WelcomePanel v4.3.6: Failed to load config file (is the config file corrupt?) (JsonToken EndArray is not valid for closing JsonType Object. Path '', line 181, position 3.)
Could not initialize plugin 'WelcomePanel v4.3.6' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.WelcomePanel.LoadConfig () [0x0001d] in <218282eb643d4880a0a96ade4942b52b>:0 
  at Oxide.Core.Plugins.Plugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x0000f] in <beb2b64691c64e2b95b99491bd85442c>:0 
  at Oxide.Core.Plugins.CSPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x00000] in <beb2b64691c64e2b95b99491bd85442c>:0 
  at Oxide.Plugins.CSharpPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x00000] in <206a0f2c6ee141f38e2ad549cde44d70>:0 
  at Oxide.Plugins.RustPlugin.HandleAddedToManager (Oxide.Core.Plugins.PluginManager manager) [0x0028e] in <003e098c427441da8dea4c89e38289d2>:0 
  at Oxide.Core.Plugins.PluginManager.AddPlugin (Oxide.Core.Plugins.Plugin plugin) [0x00027] in <beb2b64691c64e2b95b99491bd85442c>:0 
  at Oxide.Core.OxideMod.PluginLoaded (Oxide.Core.Plugins.Plugin plugin) [0x00035] in <beb2b64691c64e2b95b99491bd85442c>:0 
Previous version of plugin failed to load: WelcomePanel

Is it not possible to remove the buttons and just have one page of info?

It is possible to have all info on one page but when you removing stuff from config you can't break JSON formatting.  Based on that error message you removed something you wasn't supposed to. Use this website https://jsonformatter.curiousconcept.com/# to validate your config. 

Changed Status from Pending to Not a Bug