Delaney Sullivan

gets rid of error: error: use of deleted function ‘std::basic_istream& std::basic_istream::operator=(const std::basic_istream&)’ std::istream::operator=(std::istream(new istreambuf(_fs.rdbuf())));

### Request type Extension of existing module ### Request description Have gget fetch FASTAs and GTFs from GENCODE ### Example command _No response_ ### Example return value _No response_

Reverts pachterlab/kallisto#441