System Update Downloaded notification won't go away. topic

Does anyone know how to remove the SYSTEM UPDATE DOWNLOADED notification? I got my LG G3 a week ago. As soon as it got activated it started downloading the OTA. The next day I disabled the OTA setting in the secret menu and deleted the downloaded file from /cache (I used solid explorer with root access and it is indeed gone after several reboots to verify). The SYSTEM UPDATED DOWNLOADED notification is still persistent. Even hitting LATER does nothing to get rid of it. Does anyone have any ideas? :(

I used purple drake to root in case it matters.