Wire up admin chat settings

src/main/java/com/gmail/nossr50/chat/AdminChatManager.java

@@ -1,12 +1,14 @@
 package com.gmail.nossr50.chat;
 
-import com.gmail.nossr50.config.MainConfig;
 import com.gmail.nossr50.events.chat.McMMOAdminChatEvent;
+import com.gmail.nossr50.mcMMO;
 import org.bukkit.plugin.Plugin;
 
 public class AdminChatManager extends ChatManager {
     protected AdminChatManager(Plugin plugin) {
-        super(plugin, MainConfig.getInstance().getAdminDisplayNames(), MainConfig.getInstance().getAdminChatPrefix());
+        super(plugin,
+                mcMMO.getConfigManager().getConfigCommands().isUseDisplayNames(),
+                mcMMO.getConfigManager().getConfigCommands().getAdminChatPrefix());
     }
 
     @Override

src/main/java/com/gmail/nossr50/config/MainConfig.java

@@ -428,14 +428,6 @@ public class MainConfig extends ConfigValidated {
         return getBooleanValue(GENERAL, SHOW_PROFILE_LOADED);
     }
 
-    public String getAdminChatPrefix() {
-        return getStringValue(COMMANDS, ADMINCHAT, CHAT_PREFIX_FORMAT);
-    }
-
-    public boolean getAdminDisplayNames() {
-        return getBooleanValue(COMMANDS, ADMINCHAT, USE_DISPLAY_NAMES);
-    }
-
     public boolean getMatchOfflinePlayers() {
         return getBooleanValue(COMMANDS, GENERIC, MATCH_OFFLINE_PLAYERS);
     }