diff --git a/nextflow.config b/nextflow.config
index cd6de9c..bc66734 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -159,7 +159,6 @@ if (!params.igenomes_ignore) {
 
 env {
     PYTHONNOUSERSITE = '1'
-    // PYTHONUTF8       = '1'  // MetaPhlAn3 may fail with a UnicodeDecodeError if the locale is not set appropriately.
     R_PROFILE_USER   = "/.Rprofile"
     R_ENVIRON_USER   = "/.Renviron"
     JULIA_DEPOT_PATH = "/usr/local/share/julia"
diff --git a/subworkflows/local/shortread_adapterremoval.nf b/subworkflows/local/shortread_adapterremoval.nf
index 661062d..e522a1a 100644
--- a/subworkflows/local/shortread_adapterremoval.nf
+++ b/subworkflows/local/shortread_adapterremoval.nf
@@ -127,10 +127,3 @@ workflow SHORTREAD_ADAPTERREMOVAL {
     mqc      = ch_multiqc_files
 }
 
-def ensureFastQExtension(row) {
-    def (meta, read) = row
-    def filename = file(read.parent).resolve("${read.baseName}.fastq.gz")
-
-    read.renameTo(filename.toString())
-    return [meta, read]
-}