diff --git a/Electron-Preload/Electron 预加载脚本-old.pdf b/Electron-Preload/Electron 预加载脚本-old.pdf
deleted file mode 100644
index d3f5a12..0000000
--- a/Electron-Preload/Electron 预加载脚本-old.pdf	
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@@ -1 +0,0 @@
-