The annotation_preprocessing new pipeline does not filter out the contigs less than 1000 nucleotides
The old pipeline was doing it so we need now to do it manually if there are contigs of less than 1000 nucleotides.
To be fixed eventually.
can use https://github.com/NBISweden/GAAS/blob/master/bin/gaas_fasta_purify.pl for now (I think I need to test it)