diff --git a/CRM/Import/Form/DataSource.php b/CRM/Import/Form/DataSource.php
index 17018fd7e439..a91c459fbb67 100644
--- a/CRM/Import/Form/DataSource.php
+++ b/CRM/Import/Form/DataSource.php
@@ -161,40 +161,6 @@ public function postProcess() {
     parent::postProcess();
   }
 
-  /**
-   * Common form postProcess.
-   * @deprecated - just use postProcess.
-   *
-   * @param string $parserClassName
-   * @param string|null $entity
-   *   Entity to set for paraser currently only for custom import
-   */
-  protected function submitFileForMapping($parserClassName, $entity = NULL) {
-    CRM_Core_Session::singleton()->set('dateTypes', $this->getSubmittedValue('dateFormats'));
-    $this->processDatasource();
-
-    $mapper = [];
-
-    $parser = new $parserClassName($mapper);
-    if ($entity) {
-      $parser->setEntity($this->get($entity));
-    }
-    $parser->setMaxLinesToProcess(100);
-    $parser->setUserJobID($this->getUserJobID());
-    $parser->run(
-      $this->getSubmittedValue('uploadFile'),
-      $this->getSubmittedValue('fieldSeparator'),
-      [],
-      $this->getSubmittedValue('skipColumnHeader'),
-      CRM_Import_Parser::MODE_MAPFIELD,
-      $this->getSubmittedValue('contactType')
-    );
-
-    // add all the necessary variables to the form
-    $parser->set($this);
-    $this->controller->resetPage('MapField');
-  }
-
   /**
    * Return a descriptive name for the page, used in wizard header.
    *