[Cython] remove timestamps from generated source files

[Julian Taylor]

On 13.01.2014 22:24, Robert Bradshaw wrote:
> The timestamp is in a comment which ccache can strip before looking up
> items in the cache; are you sure this is an issue?

well this is embarrassing, it indeed strips the comments...
The issue was setup.py used a compiler symlink not present in my ccache
folder. I draw wrong conclusions to quickly ...
Sorry for the noise.