Remove action center icon via group policy, HideSCAHealth

This will automatically disables all action center messages about Windows Update, Internet security settings, Network firewall, Spyware and related protection, User Account Control, Virus Protection, Windows Backup, Windows Troubleshooting, Check for updates

To do it so..
Go to User Configuration > Policies > Administrative Templates > Start Menu and Taskbar

Open Remove the Action Center icon and set Enable

To do this cheat in current user profile without group policy just launch windows command prompt in "Run as administrator" mode and paste:

reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v HideSCAHealth /t REG_DWORD /d 1 /f