How can I remove the confirmation when a friend request is sent?
You may want to bookmark our learning center as it's a great resource. https://www.socialengine.com/support/article/5210611/se-php-friendship-settings this shows how to set the friendship settings. I believe you are looking for the setting "Friendship Verification" found in that tutorial.
after sending the friend request I would not like to see this confirmation
I don't have that on our testing site when I send a friend request. Perhaps you are using a plugin?
Yes, right