/usr/share/mythbuntu/initial-setup.desktop is in mythbuntu-common 0.78.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Desktop Entry]
Name=Initial Setup
Comment=First boot configuration
GenericName=First boot configuration
Exec=/usr/share/mythbuntu/initial-setup.sh
Type=Application
Icon=mythtv
Categories=GTK;System;Settings;
NoDisplay=true
|