To disconnect your Automower® Connect account from Google Home and remove all Automower® robotic lawn mowers from your Google Home, and follow the instructions below.
Open the Google Home app.
Tap the Settings icon. 
Select Works with Google.
Tap Husqvarna Automower®.
Select Unlink account.
Tap Unlink to confirm that you want to remove all Automower® robotic lawn mowers from your Google Home devices, and disconnect your Automower® Connect account from Google Home.
Now the connection between your Google account and your Automower® Connect account is removed and your Automower® robotic lawn mowers are no longer a part of your Google Home devices.