I tested this patch on Fedora 21 and, after removing Kimchi, some files were still left on the system.
I installed the RPM, started the Kimchi server, stopped the server and then I removed the RPM. Here's the final output of my tests:
[kimchi@localhost ~]$ ls /etc/kimchi/distros.d kimchi-cert.pem kimchi.conf kimchi-key.pem nginx.conf.in nginx_kimchi.conf[kimchi@localhost ~]$ sudo yum remove kimchi[...][kimchi@localhost ~]$ ls /etc/kimchi/
kimchi-cert.pem kimchi-key.pem[kimchi@localhost ~]$