Deleting videos from video library

i have a quick question. how do i delete videos i don't want anymore from my video library. i know its a dumb question but i can't figure it out.

 

in my library, it doesn't show the video details of the dvd that i put into the ipod. it only shows it in the video library and when i right click, clear isn't an option.

 

i was able to delete it from the purchased section but it doesn't delete it any where else.

 

thank u so much--i finally got it to work. thank you!