Delete WPMU Dev Dashboard Notifications

Hi there,

Please let me know how to delete this message from my site:

"Please install the latest version of our free Update Notifications plugin which helps you stay up-to-date with the most stable, secure versions of WPMU DEV themes and plugins. More information »"

I've read the other Support posts and none seem to apply to my issue.

I had a older version of WPMU Dashboard installed but deleted the plugin a while back.

There are no WPMU plugins installed so nothing to edit.

Many thanks for your help.

Best regards,
Tina