No problem - go to User Settings

Then Calendars

And there you should see a section on at the top where you can simply turn this off and you should be all good to go!

In that area, you can also choose to disable these links for meetings with external attendees by choosing the option "Add for events with only internal attendees".

Note: the link will not be added to the meeting invite if the organizer of the event has this feature turned off.