Fix chatterbox example (#3506)

Author: ShiftSad

examples/python/chatterbox.py

@@ -30,8 +30,7 @@
 bot = mineflayer.createBot({
     "host": host,
     "port": port,
-    "username": username,
-    "port": port
+    "username": username
 })
 
 Item = require("prismarine-item")(bot.registry)
@@ -300,4 +299,4 @@ def entityEffect(this, entity, effect):
 
 @On(bot, "entityEffectEnd")
 def entityEffectEnd(this, entity, effect):
-    print("entityEffectEnd", entity, effect)
+    print("entityEffectEnd", entity, effect)