Hi,
pretty much the same question was posted here.
The threadstarter asked how to remove the update notification at the top of the dashboard. You provided a solution how to completely hide the available updates.
I would like to rephrase the question a little bit. While it is absolutely not the best idea to hide updates, the large messages on the top of the dashboard can get really annoying. In my humble opinion, it is enough to show the updates in the sidebar. The red dot is pretty noticeable. Many plugins throw more or less important messages at the top of the dashboard which is not always a good idea (I look at you, Yoast!). Often, these warnings cause time-consuming questions by customers and make them feel uneasy about things that has already been taken care of.
Personally, I would prefer to have as few messages as possible in the dashboard. To be honest, I don’t want ANY themes or plugins throw anything there. I don’t consider this good practice.
But that’s me. Users who maintain only one single website might have a different opinion on that.
Thanks, Mike