ALM-674 change rake task to use delete_all
ALM-674 change rake task to use delete_all

lagotto/lagotto,ankurpohekar/Lagotto,articlemetrics/lagotto,lagotto/lagotto,articlemetrics/lagotto,CrossRef/lagotto,ankurpohekar/Lagotto,msingh05/lagotto,ankurpohekar/Lagotto,msingh05/lagotto,CrossRef/lagotto,CrossRef/lagotto,articlemetrics/lagotto,lagotto/lagotto,msingh05/lagotto,ankurpohekar/Lagotto,ankurpohekar/Lagotto,ankurpohekar/Lagotto,mfenner/lagotto,mfenner/lagotto,mfenner/lagotto,ankurpohekar/Lagotto