How to Delete All Promotional Gmails in one Click

Here We have a Method ,How to Delete All Gmail in One Click weather it is in Promotional or Social Gmail.Just Follow the Steps

1) Log into your Google Account
2) Its your Choice You want to Delete Gmail from Primary/Promotional or from Social Category            Just Click on It.
3) The red Arrow Shows you category

4) Lets i am deleting it From Promotional Category
5) Click On your favourite Category and then Click on Second arrow

6) From there Click on All and Then Press Delete