No prob! Since the installer is no longer available, I don't see any easy way. If you have no desire to go into files and do a lot of manual work, a good alternative is Better Bat AI, as it only adds Varietas Delectat without modern expansion, and improves the AI. The down side is that it changes flags of civs and adds female units which all speak english regardless which civ you playing. However, I can walk you through on that on how to remove that stuff. If better AI is not up your valley and just want to enjoy vanilla BTS with VD, you will have to do a lot of manual work in files and remove references to new units and their art in each of civs folders in mod. Or try and find VD without modern expansion.