从vs中删除自带的Microsoft Git Provider
https://researchaholic.com/2015/02/02/remove-the-microsoft-gitprovider-from-visual-studio-2013/
vs自带的Git Provider非常不好用，每一次在Tools里面把Source Control调节成None，下一次打开，又是Git Provider
- Make sure Visual Studio is closed
- Open regedit
- Navigate to
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\12.0_Config\SourceControlProviders - Delete
11b8e6d7-c08b-4385-b321-321078cdd1f8- In the details pane it should say GitProvider
- Open Visual Studio
通过上面的方式，从注册表直接删除
