Update nextflow.config

Remove `-C` no clobber option from Bash.
It's causing issue with reporting metrics

Author: maxulysse

nextflow.config

@@ -206,7 +206,6 @@ env {
 // Set bash options
 process.shell = [
     "bash",
-    "-C",         // No clobber - prevent output redirection from overwriting files.
     "-e",         // Exit if a tool returns a non-zero status/exit code
     "-u",         // Treat unset variables and parameters as an error
     "-o",         // Returns the status of the last command to exit..