ForgePatch/patches_old/minecraft/net/minecraft/world/border/WorldBorder.java.patch

--- ../src-base/minecraft/net/minecraft/world/border/WorldBorder.java
+++ ../src-work/minecraft/net/minecraft/world/border/WorldBorder.java
@@ -284,4 +284,9 @@
             iborderlistener.func_177690_b(this, p_177747_1_);
         }
     }
+
+    public void removeListener(IBorderListener listener)
+    {
+        this.field_177758_a.remove(listener);
+    }
 }