ensref: drop fasta <id type> alt, since it is not documented
ensref: drop fasta <id type> alt, since it is not documented

mpg-age-bioinformatics/htseq-tools,mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/rnaseq-tools,mpg-age-bioinformatics/htseq-tools,mpg-age-bioinformatics/htseq-tools