[#B845145621BD7E4F273CB54384E12AD19C12B789]
Remove the authority
url& remove_authority();
This function removes the authority, which includes the userinfo, host, and a port if present.
assert( url( "http://example.com/echo.cgi" ).remove_authority().buffer() == "http:/echo.cgi" );
this->has_authority() == false && this->has_userinfo() == false && this->has_port() == false
Linear in `this->size()`.
Throws nothing.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT