Clarify TODOs in DesktopEntry

[colonelpanic8]

@u11gh The TODOs in desktop entry here:

https://github.com/taffybar/taffybar/blob/e950474fb79bb657466f904d2081bbc69387b09f/src/System/Taffybar/Information/XDG/DesktopEntry.hs#L136

Don't make much sense to me. Can you either clarify what you mean or remove them?

[colonelpanic8]

Would also appreciate if you could answer the question here:

https://github.com/taffybar/taffybar/blob/e950474fb79bb657466f904d2081bbc69387b09f/src/System/Taffybar/Information/XDG/DesktopEntry.hs#L164

[colonelpanic8]

@u11gh This code has moved to this repository. I removed the TODOs because I did not understand them, but the links shoudl still work.