Revert "Experiment with Minecraft avatars"

This reverts commit 83bcb25.

They /should/ be supported OOTB, whatever is going
wrong is not in the Matterbridge configuration.

matterbridge/matterbridge.toml

@@ -84,7 +84,7 @@ account="api.matterbukkit"
 channel="api"
 
 [[gateway.inout]]
-account="discord.compsoc-mcavatars"
+account="discord.compsoc"
 channel="ID:1245849017565446254" # minecraft-ingame
 
 
@@ -104,25 +104,6 @@ AutoWebhooks=true
 # Show a preview of other bot's embeds by copying the title and description
 ShowEmbeds=true
 
-# Goal: Show minecraft avatars for MC -> Discord messages. We want to use the
-# IconURL setting, but this setting can only be applied on account level, not
-# per gateway (a bit stupid ngl, we should be able to change settings for each
-# inout gateway). So, we need to create a separate account definition that
-# has all-identical settings, except for IconURL.
-[discord.compsoc-mcavatars]
-
-Server="315277951597936640" # CompSoc Edinburgh
-RemoteNickFormat="{NICK}"
-# Disable threading, as Webhooks can't reply to threads and it looks off
-PreserveThreading=false
-# Allow no mentions, since it can be source of spam. Default is all.
-AllowMention=[]
-# Automatically manage webhooks for Discord channels
-AutoWebhooks=true
-# Show a preview of other bot's embeds by copying the title and description
-ShowEmbeds=true
-IconURL="https://mc-heads.net/avatar/{NICK}.png"
-
 [discord.sigint]
 
 Server="754018502058180659" # SIGINT Edinburgh