Some people like me do not want to update directly to the latest version or stay with the current one.
1.Select your Theme ad click on Edit HTML and CSS
2. Open globalTemplate file. (Can be found in core > front > global)
3, Search for {template="updateWarning" app="core" group="global" params=""} and remove it.
4. Click and save
Here the fast TuT version xD
I hope that it was understandable and helpful.