[fractal] general: Remove unused files

[Daniel Garcia Moreno <danigm src gnome org>]

commit 16a9efd6c35a28e11b5c58a66829df7e4fe20423
Author: Christopher Davis <brainblasted disroot org>
Date:   Mon Nov 9 18:40:54 2020 -0800

    general: Remove unused files
    
    We were keeping around a very outdated TODO file
    and a very old screenshot from before the app was
    named Fractal.
    
    At this point, neither of these files are needed.

 TODO                       |  27 ---------------------------
 screenshots/guillotine.png | Bin 140014 -> 0 bytes
 2 files changed, 27 deletions(-)