I'm quite sure that all related files are solely in your home directory.
Wine menus/launchers are stored in these directories, maybe even more
, listed in the order of the directory tree:
~/.config/menus/applications-merged
~/.local/share/applications
~/.local/share/applications/wine
~/.local/share/desktop-directories
~/.local/share/icons
~/.wine/drive_c/users/Public/Desktop
~/.wine/drive_c/users/Public/Start Menu/Programs
~/.wine/drive_c/users/<USER>/Desktop
~/.wine/drive_c/users/<USER>/Start Menu/Programs
Good luck!
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