A cleanup after #1199.
git's user.{email,name} config options have been no longer required since 0ecf3188515e46b4da5580b4b9805d2cb927eb91.
git's `user.{email,name}` config options have been no longer required
since 0ecf3188515e46b4da5580b4b9805d2cb927eb91.utACK 9b60e3148d8c19562c8c3805bd0cdc55933e912c