This forces consistency, since they will be re-generated whenever
a git operation alters CMakelists.txt. They are still in the repo
because users might not actually run cmake.
This reverts commit d9ced92d4040ee6c1475e96e18d715f99647e668, reversing
changes made to d2fa664a12b478b3fd21f7659f3674c8520bf43b.
Conflicts:
include/json/version.h (keep)