Hi Damo1895,
Welcome to the MSDN forum.
Refer to your description, I tested it on my VS 2015 and discussed with our colleague who are responsible for MVC development. I found when we add a
view, and it default check the option ‘Use a layout page:’ like the following screenshot, which auto install the bootstrap and dependencies due to the _Layout.cshtml includes those. You can open the _Layout.cshtml file to check this and if
you uncheck the above option and those bootstrap files will not create.
Meanwhile, if you do not want to uncheck the above option, it looks like there are some methods to help you achieve this requirement, please check this
similar issue: How to prevent auto-install of Bootstrap
(and dependencies) in MVC 5 scaffolding? and davidmdem provided 3 ways
(for my opinion, you can try to create a custom empty MVC project template and export into VS, so you can directly create such empty template next time)
Best regards,
Sara
