Update nextflow_schema.json

Co-authored-by: Nicolas Vannieuwkerke <[email protected]>

Author: ShimiraOleg

nextflow_schema.json

@@ -25,7 +25,6 @@
                 "outdir": {
                     "type": "string",
                     "format": "directory-path",
-                    "exists": true,
                     "description": "The output directory where the results will be saved. You have to use absolute paths to storage on Cloud infrastructure.",
                     "fa_icon": "fas fa-folder-open"
                 },