Bulk remove sale dates from WooCommerce products

This operation is possible with enabled "binded editing" mode only, where products should be selected by checkboxes:

If necessary make filtration by your logic
Set pagination value to the max necessary
Select products using checkboxes (press SHIFT keyboard to select from first to last)
Enable binded editing mode
Click 'Clear' button on any selected product
Wait until operation finished

Products Editor with sale time from / to, stock and gallery columns: products ticked, binded editing on, the clear link of a sale date arrowed