Yeah you can get rid of those but you need to be careful so I've been told. I haven't run into trouble but apparently it can cause issues because the messages don't get turned back on and you get no warnings anywhere in access.
You need to add
DoCmd.SetWarnings False
before the code that brings a warning then after the code add
DoCmd.SetWarnings True
For extra protection whenever I use this on a form I also add
DoCmd.SetWarnings True
to the "on close" event of the main form and the subform if there is on. This way the warnings are turned back on for sure. If they don't get turned on it can cause problems.