You can do something like that:
{{ standard_header_includes|cut('https://static.hsstatic.net/jquery-libs/static-1.4/jquery/jquery-1.11.2.js')|cut('https://static.hsstatic.net/content_shared_assets/static-1.4049/css/public_common.css')|cut("hsjQuery = window['jQuery']") }}
...
{{ standard_footer_includes|cut('https://static.hsstatic.net/content_shared_assets/static-1.4049/js/public_common.js') }}
to remove .js and .css which you don’t need.
And this is my score, which I have finally achived on the HubSpot page - jointacademy.com.
There is plenty of problems with HubSpot if you want to build a good website. You need hacky solutions and there are still issues which you can’t solve, btw you can’t use service worker. ;/