Update fileUpload.js

Corrected issue where the ID of the removed file stayed in the hidden input after removal.

Author: pfmziota

lib/client/fileUpload.js

@@ -84,7 +84,7 @@ Template.afFileUpload.helpers({
     return Template.instance().currentUpload.get();
   },
   fileId() {
-    return Template.instance().fileId.get() || this.value;
+    return Template.instance().fileId.get();
   },
   uploadedFile() {
     const template = Template.instance();