How do I turn off Life is Good notification on Lg G2 Lollipop?

Lg_G2_Owner

I tried replacing notifications with other sounds for Display Off and other updates, but now I get both the annoying Life is Good and my quiet choice (Sprout).  I attached the phone to my laptop and looked for the Life is Good notification sound, but I cannot find it to delete it.  I only found the 2+min music file.

Snn5

System notification files cannot be deleted.  They are OS-protected.  The display off and notification sounds are in sounds and notifications under Notifications and Advanced settings.  Screen off sound is default to a very short tone and I can't see a way to make that any other sound.  Where or when are you hearing "Life is Good?"