[util] Cleanup some deviceLossOnFocusLoss configs

[Blisto91]

A bunch of alt-tab related issues are gone on current master which allows a small builtin config cleanup.
This has been tested on a RTX 4080 in KDE Wayland, KDE X11 and Windows.

Delta Force, The Sims 3, Guild Wars 1 and Splinter Cell Conviction work out of the box since #4609 so the configs aren't needed.
Rise of Nations is fine since the 2.4.1 release without the config.

Closes #4082

[doitsujin]

Do we understand why these are no longer needed?

[Blisto91]

For the 4 games mentioned first and in #4082 then, the ones that wanted to work with the commit, i reversed bisected to start working on their own since 43838d3
The problem mentioned in the linked issue are old regressions from a previous time when the swapchain code was touched.
Though i can't give a technical reason as to why.

Rise of Nations i have not bisected which specific commit that fixed the issue in 2.4.1

Edit: No dev have taken a deeper look if that is what you meant.

[doitsujin]

The strange part here is that the swapchain backend code really should be transparent to the app, so this is a little bit worrying.

Will merge for now, but probably good to keep an eye on things.

[turbedi]

Aren't the comments for Splinter Cell Conviction and Delta Force outdated now? They still mention the black screen on Alt-Tab

[Blisto91]

Yes. Derp