[wp-testers] Can't get rid of auto update error notice

[kimsch]

I had attempted to update a plugin and it timed out. As that sometimes
happens when the zip file hangs, I updated the plugin manually through ftp.
I'm sorry I can't remember which plugin it was.

Now I have the yellow notice that says: An automated WordPress update has
failed to complete - please attempt the update again now. 

How can I get rid of this notice?

Stable 3.0

Kim