remove CSV from project.toml. It was not used anyway

Author: j-fu

Project.toml

@@ -4,7 +4,6 @@ version = "0.4"
 authors = ["Jürgen Fuhrmann <juergen-fuhrmann@web.de>, Jason Landini <landinjm@umich.edu>"]
 
 [deps]
-CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 ExtendableGrids = "cfc395e8-590f-11e8-1f13-43a2532b2fa8"
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
 LessUnitful = "f29f6376-6e90-4d80-80c9-fb8ec61203d5"