diff --git a/nonebot_plugin_tetris_stats/utils/platform.py b/nonebot_plugin_tetris_stats/utils/platform.py
deleted file mode 100644
index 8b7de95..0000000
--- a/nonebot_plugin_tetris_stats/utils/platform.py
+++ /dev/null
@@ -1,19 +0,0 @@
-from nonebot.adapters import Bot
-
-
-def get_platform(bot: Bot) -> str:
-    try:
-        from nonebot.adapters.onebot.v12 import Bot as OB12Bot
-
-        if isinstance(bot, OB12Bot):
-            return bot.platform
-    except ImportError:
-        pass
-    try:
-        from nonebot.adapters.satori import Bot as SaBot
-
-        if isinstance(bot, SaBot):
-            return bot.platform
-    except ImportError:
-        pass
-    return bot.type