You can turn off the Hangouts links that Google automatically adds to your events. 

See info below for both G Suite users (if your team's on G Suite), and also for personal Google accounts. 

G Suite accounts

Other Google accounts (not G Suite) 

  • Open Google Calendar
  • Click cog in top right 
  • Select Settings
  • Scroll down to Automatically add video calls to events that I create 
  • Deselect the box there.  
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