How do I delete my account?

I want to unsubscribe.

URL from: http://www.checkio.org/how-to-help/ HTTPUSERAGENT: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36 HTTPCONNECTION: close HTTPCOOKIE: sessionid=x8a60m0ewvhblynpqzqq5pdreldtdz6r; csrftoken=rFiYWPA3hAdC3zVSsy37T88wjDsFEdIr; ucsvlogfollow=4cb02be8aa2844b083b71fdea4b64462; _utma=82053188.71354771.1392381778.1392453709.1392659618.3; _utmb=82053188.11.10.1392659618; _utmc=82053188; _utmz=82053188.1392381778.1.1.utmcsr=b.hatena.ne.jp|utmccn=(referral)|utmcmd=referral|utmcct=/unirocat/interest SERVERNAME: www.checkio.org REMOTEADDR: 127.0.0.1 modwsgi.requesthandler: wsgi-script wsgi.urlscheme: http PATHTRANSLATED: /opt/checkio/wsgi.py/profile/foundbug/ SERVERPORT: 80 wsgi.multiprocess: True modwsgi.inputchunked: 0 SERVERADDR: 127.0.0.1 DOCUMENTROOT: /opt/checkio modwsgi.processgroup: checkio.org HTTPXFORWARDEDPROTO: http SCRIPTFILENAME: /opt/checkio/wsgi.py SERVERADMIN: admin@checkio.org wsgi.input: <mod_wsgi.Input object at 0x7fbbbf01e7f0> HTTPDNT: 1