How to remove images from gallery of some products?

Two ways about how to clean the gallery of some products, and for this operation column 'Gallery' should be activated!

Way 1:

Use checkboxes to select some products
Enable 'binded editing' switcher
Click on Gallery button of any selected product
In the opened popup remove all images and press 'Apply' button
Wait until changes apply to all other selected products

Way 2:

Use the Filter tab functionality where you should filter products by parameters you need
Then go to tab Bulk Edit -> Additional
Select using checkbox Gallery field
Click on Images button there and remove all images there if presented, or/and press 'Apply' button
Click on 'Do Bulk Edit' button and wait until bulk operation for filtered products applies

Of course using way 2 it is possible to clean galleries of all products in the shop if to miss step one there (filtering)