delete release dir

yxj

2021-08-19 4c0a2ed2bf2cdc2d14c2fbe5004def0a3e6586db

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<?xml version="1.0" encoding="utf-8"?>
<!--
https://go.microsoft.com/fwlink/?LinkID=208121. 
-->
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
</Project>