Sad to hear. My condolances.
Note that the github repository contains some copyrighted units from the Borland Delphi 7 RTL/VCL.
You should remove them. It will not damage the project in any way since these units are unmodified.
The project can still compile or made to compile in both FPC/Lazarus and newer Delphi versions.
Plz remove:
Buttons.pas, comctrls.pas, commctrl.pas, controls.pas, dialogs.pas, extctrls.pas, graphics.pas, inifiles.pas, menus.pas, richedit.pas, shellctrls.pas, stdctrls.pas. ( and windows.pas, although that is strictly not necessary because (c) microsoft and a waver)
All those units are copyrighted, not open sourced, and are not necessary for the code to compile, because they are standard in Delphi and Lazarus has the same named equivalents.
Note that Borland has published the rtl/vcl code for D7/Kylix3 themselves through free versions. Notably on Btitish and German magazines accompanying disks, D7 pro, and a GPL'd version for Kylix.
If you claim the Kylix code it is GPL so limited, otherwise it is plain commercially licensed.
(You can claim GPL on the code if you set the GPL flag in D7 system.pas.....a lesser known feature. You can NOT downgrade from GPL to, say, LGPL, though, but the GPL is legal.)