changed process for writing results to file to collectFile Operator

nextflow/backmap.nf

@@ -628,18 +628,6 @@ if (coverageHistogram) {
       """
             }
             return result
-        }.set { chResults }
-
-        process results2File {
-            cpus 1
-            input:
-                val results from chResults.collect()
-            output:
-                file "${prefix}.results.txt" into chResultFile
-            script:
-                """
-                echo '${results.join('\n')}' > ${prefix}.results.txt
-                """
-        }
+        }.collectFile(name: "${prefix}.results.txt", newLine: false, storeDir: output)
     } //fi: genomeSizeEstimation
 } //fi: coverageHistogram