You should get rid of them to provide more metadata about this software.
debian/patches: 15 patches to forward upstream
low
Among the 15 debian patches
available in version 7.0.20-dfsg-1 of the package,
we noticed the following issues:
15 patches
where the metadata indicates that the patch has not yet been forwarded
upstream. You should either forward the patch upstream or update the
metadata to document its real status.