fix: remove p

tasks/DownSample.wdl

@@ -11,7 +11,6 @@ task DownSample {
     set -o pipefail
     set -e
     nt=$(nproc)
-    # seqkit sample --two-pass --threads $nt -s 100 -p ${p} ${fastq} -o ${sample_id}.fastq.gz
     seqkit sample --two-pass --threads $nt -s 100 -n ${n} ${fastq} -o ${sample_id}.fastq.gz
   >>>