Android L 5.0.1 wont unlink my exchange account from GMail

I updated my Nexus 5 to L5.0.1. No problems except my Outlook exchange account is now linked to GMail which I really do not want. There seems to be no way to unlink it either despite deleting the exchange account!

In the Help section it says Goto Settings/Accounts and look under POP3 or IMAP but neither of these are visible.

Any suggestions??