trash bin problem

hi, i couldn't delete this program from my trash bin so i got told to type in terminal: sudo rm -R ~/.trash
that worked and deleted it, but now when i move sumthing to the trash, when i put it in, a pop up comes up and says "the item "folder name" will be deleted immediately. are you sure u want to continue?"
how do i stop this happening and change it back to the normal settings?

 

thanks it worked