removing used variable

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: temi

grails-app/controllers/au/org/ala/merit/FileScanInterceptor.groovy

@@ -14,7 +14,6 @@ class FileScanInterceptor {
 
     boolean before() {
         if (request.respondsTo('getFile')) {
-            boolean clean = true
             List statusCodes = []
             def files = request.getFileNames()
             while(files.hasNext()) {