删除BaGet中的nuget包

[yuanrui]

1. 关闭BaGet程序；
2. 做好备份工作：数据库备份、nuget包备份；
3. 删除packages和symbols文件夹中对应的相关文件；
4. BaGet默认数据库为SQLite，使用DB Browser打开数据库，修改替换脚本中的'Your.Package.Name'，执行脚本，保存数据库；

   
   delete from TargetFrameworks
   where PackageKey in (select Key from Packages where id = 'Your.Package.Name');

delete from PackageTypes where PackageKey in (select Key from Packages where id = 'Your.Package.Name');

delete from PackageDependencies where PackageKey in (select Key from Packages where id = 'Your.Package.Name');

delete from Packages where id = 'Your.Package.Name';

5. 启动BaGet程序；
6. done.