As an Account Owner or Manager, you are allowed to remove or add a connection.
Step 1: Navigate to Connections
Click your Account Name in the upper right-hand corner, and then select Connections.
Here you will see a list of all the connections you have successfully connected with.
The overview also shows if a connection has expired or is disconnected.
Step 2: Delete a connection
You can delete a connection by clicking the delete icon as shown below.

Connections that are used in an active feed cannot be deleted.