To use certain HubSpot tools, you need to connect a Google account to HubSpot. Google apps you can connect include a Gmail inbox, a Google calendar, or Google Search Console. If you want to disconnect those apps from HubSpot, you need to completely revoke access to HubSpot in your Google account.
Impact of removing access in Google
When you remove access to HubSpot in your Google account, any of the following apps that were connected to HubSpot will disconnect: