Code cleanup left over from #4311

modules/backend/formwidgets/fileupload/assets/js/fileupload.js

@@ -3,8 +3,6 @@
  *
  * Data attributes:
  * - data-control="fileupload" - enables the file upload plugin
- * - data-unique-id="XXX" - an optional identifier for multiple uploaders on the same page, this value will
- *   appear in the postback variable called X_OCTOBER_FILEUPLOAD
  * - data-template - a Dropzone.js template to use for each item
  * - data-error-template - a popover template used to show an error
  * - data-sort-handler - AJAX handler for sorting postbacks
@@ -430,7 +428,6 @@
         uploadHandler: null,
         configHandler: null,
         sortHandler: null,
-        uniqueId: null,
         extraData: {},
         paramName: 'file_data',
         fileTypes: null,

modules/backend/formwidgets/fileupload/partials/_file_multi.htm

@@ -6,7 +6,6 @@
     data-template="#<?= $this->getId('template') ?>"
     data-error-template="#<?= $this->getId('errorTemplate') ?>"
     data-sort-handler="<?= $this->getEventHandler('onSortAttachments') ?>"
-    data-unique-id="<?= $this->getId() ?>"
     data-max-filesize="<?= $maxFilesize ?>"
     <?php if ($useCaption): ?>data-config-handler="<?= $this->getEventHandler('onLoadAttachmentConfig') ?>"<?php endif ?>
     <?php if ($acceptedFileTypes): ?>data-file-types="<?= $acceptedFileTypes ?>"<?php endif ?>

modules/backend/formwidgets/fileupload/partials/_file_single.htm

@@ -5,7 +5,6 @@
     data-upload-handler="<?= $this->getEventHandler('onUpload') ?>"
     data-template="#<?= $this->getId('template') ?>"
     data-error-template="#<?= $this->getId('errorTemplate') ?>"
-    data-unique-id="<?= $this->getId() ?>"
     data-max-filesize="<?= $maxFilesize ?>"
     <?php if ($useCaption): ?>data-config-handler="<?= $this->getEventHandler('onLoadAttachmentConfig') ?>"<?php endif ?>
     <?php if ($acceptedFileTypes): ?>data-file-types="<?= $acceptedFileTypes ?>"<?php endif ?>

modules/backend/formwidgets/fileupload/partials/_image_multi.htm

@@ -6,7 +6,6 @@
     data-template="#<?= $this->getId('template') ?>"
     data-error-template="#<?= $this->getId('errorTemplate') ?>"
     data-sort-handler="<?= $this->getEventHandler('onSortAttachments') ?>"
-    data-unique-id="<?= $this->getId() ?>"
     data-max-filesize="<?= $maxFilesize ?>"
     <?php if ($useCaption): ?>data-config-handler="<?= $this->getEventHandler('onLoadAttachmentConfig') ?>"<?php endif ?>
     <?php if ($acceptedFileTypes): ?>data-file-types="<?= $acceptedFileTypes ?>"<?php endif ?>

modules/backend/formwidgets/fileupload/partials/_image_single.htm

@@ -5,7 +5,6 @@
     data-upload-handler="<?= $this->getEventHandler('onUpload') ?>"
     data-template="#<?= $this->getId('template') ?>"
     data-error-template="#<?= $this->getId('errorTemplate') ?>"
-    data-unique-id="<?= $this->getId() ?>"
     data-thumbnail-width="<?= $imageWidth ?: '0' ?>"
     data-thumbnail-height="<?= $imageHeight ?: '0' ?>"
     data-max-filesize="<?= $maxFilesize ?>"