You can remove the package. And install it again. This should change the /etc/apt/sources.list.d/official-package-repositories.list to the following
It also should remove the neon.list file in /etc/apt/sources.list.d .
If you have that then everything should be alright.
Code:
# Do not edit this file manually, use Software Sources instead.
# Maui specific Packages
deb http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-2 xenial main
#deb-src http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-2 xenial main
# Maui specific Packages Backports
#deb http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-xenial-backports xenial main
#deb-src http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-xenial-backports xenial main
# Neon specific Packages Backports
#deb http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-xenial-backports-neon xenial main
#deb-src http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-xenial-backports-neon xenial main
# Ubuntu
deb http://archive.ubuntu.com/ubuntu xenial main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ xenial partner
# Maui tested Neon Clone
deb http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-2-packages xenial main
#deb-src http://ds9-maui.s3-website.eu-central-1.amazonaws.com/maui-2-packages xenial main
It also should remove the neon.list file in /etc/apt/sources.list.d .
If you have that then everything should be alright.