Revert "settings: default to auto-suspend after 15 minutes"
Revert "settings: default to auto-suspend after 15 minutes"

This reverts commit bf77bbf7bd19bfa142be4bad76e1f4c8fc3db71e.

Upstream addressed this issue directly in gnome-settings-daemon,
so we'll go with their patch instead.

Note that the upstream solution went with 20 minutes rather than
15 minutes, matching the European standards (which exceeds the
CEC standard of 30 minutes).

https://phabricator.endlessm.com/T20634

endlessm/eos-theme