change redundant `.cookiecutterrc` mentioning
change redundant `.cookiecutterrc` mentioning

* remove redudant statement but restate that this needs to be done in
the appropriate configuration file

Springerle/cookiecutter,pjbull/cookiecutter,stevepiercy/cookiecutter,hackebrot/cookiecutter,willingc/cookiecutter,Springerle/cookiecutter,luzfcb/cookiecutter,dajose/cookiecutter,terryjbates/cookiecutter,michaeljoseph/cookiecutter,stevepiercy/cookiecutter,michaeljoseph/cookiecutter,willingc/cookiecutter,dajose/cookiecutter,luzfcb/cookiecutter,pjbull/cookiecutter,hackebrot/cookiecutter,audreyr/cookiecutter,terryjbates/cookiecutter,audreyr/cookiecutter