cabal2nix.cabal: simplify "Tested-With" field
cabal2nix.cabal: simplify "Tested-With" field

jb55/cabal2nix,bennofs/cabal2nix,gridaphobe/cabal2nix,spencerjanssen/cabal2nix,dmalikov/cabal2nix,Fuuzetsu/cabal2nix,psibi/cabal2nix