Gift Certificate-Send Via Postal Mail

Hello Dears ,

im trying to disable (Send via postal mail) from the gift certificate , I have followed the following artecal but i dont have the same direction for pasting the update.ptl file , however i have past it under mythemename-templets-addons-mychanges-overrides-blocks-static_templates , nothing has been changed

can anyone help me out with that please ?

Thank you