[#9B5D52B0D72E30AF718C27104C7F588264CE294D]
Remove the origin component
url& remove_origin();
This function removes the origin, which consists of the scheme and authority.
assert( url( "http://www.example.com/index.htm" ).remove_origin().buffer() == "/index.htm" );
this->scheme_id() == scheme::none && this->has_authority() == false
Linear in `this->size()`.
Throws nothing.