diff --git a/scalabot-extension/src/main/java/net/lamgc/scalabot/extension/ScalaBotExtension.java b/scalabot-extension/src/main/java/net/lamgc/scalabot/extension/ScalaBotExtension.java
deleted file mode 100644
index a762c36..0000000
--- a/scalabot-extension/src/main/java/net/lamgc/scalabot/extension/ScalaBotExtension.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package net.lamgc.scalabot.extension;
-
-import org.telegram.abilitybots.api.bot.BaseAbilityBot;
-import org.telegram.abilitybots.api.db.DBContext;
-import org.telegram.abilitybots.api.sender.MessageSender;
-import org.telegram.abilitybots.api.util.AbilityExtension;
-
-/**
- *
- */
-public abstract class ScalaBotExtension implements AbilityExtension {
-
-    /**
-     * 扩展所属的机器人对象.
-     *
-     * <p> 不要给该属性添加 Getter, 会被当成 Ability 添加, 导致出现异常.
-     */
-    protected final BaseAbilityBot bot;
-
-    public ScalaBotExtension(BaseAbilityBot bot) {
-        this.bot = bot;
-    }
-
-    protected MessageSender getSender() {
-        return bot.sender();
-    }
-
-    protected DBContext getDBContext() {
-        return bot.db();
-    }
-
-}