delete it!
To clear your keychain data from iCloud, go to System Preferences’ iCloud pane, click Options next to Keychain, then clear the box next to “Allow approving with security code.” Finally, on each of your devices, turn off iCloud Keychain.
To clear your keychain data from iCloud, go to System Preferences’ iCloud pane, click Options next to Keychain, then clear the box next to “Allow approving with security code.” Finally, on each of your devices, turn off iCloud Keychain.