Merge pull request #15655 from demeritcowboy/activity-search-form-values

#1348 - backport of PR 15654

CRM/Activity/Form/Search.php

@@ -344,13 +344,6 @@ class CRM_Activity_Form_Search extends CRM_Core_Form_Search {
     }
   }
 
-  /**
-   * @return null
-   */
-  public function getFormValues() {
-    return NULL;
-  }
-
   /**
    * Return a descriptive name for the page, used in wizard header
    *