remove .htc TLD (#548)
remove .htc TLD (#548)

.htc has been removed effective 2017-10-24

sources:
1) https://www.iana.org/domains/root/db/htc.html
2) https://github.com/whois/ianawhois/commit/1691d737b8f30c1f217d8db64793e65234a6552b
rockdaboot/list,rockdaboot/list,rockdaboot/list,publicsuffix/list,sleevi/list,sleevi/list,publicsuffix/list,publicsuffix/list,publicsuffix/list,sleevi/list,sleevi/list,rockdaboot/list