This module is used to delete the webform submissions with in the date range you given.
This module will add a Menu tab(Bulk Delete) under webform Results tab, with the help of this user can enter their date range they want.
1. Copy the entire webform_submissions_bulk_delete directory the Drupal sites/all/modules directory.
2. Login as an administrator. Enable the module in the "Administrator" -> "Modules"
How to use: