delete wsgi

vercel.json

@@ -2,7 +2,7 @@
     "version": 2,
     "builds": [
         {
-            "src": "./main.py",
+            "src": "main.py",
             "use": "@vercel/python"
         }
     ],

wsgi.py

@@ -1,10 +0,0 @@
-import os
-from dotenv import load_dotenv
-
-dotenv_path = os.path.join(os.path.dirname(__file__), '.env')
-if os.path.exists(dotenv_path):
-    load_dotenv(dotenv_path)
-
-from rsshub import create_app
-
-app = create_app('production')