Within the Hulu Plus app, head to your Queue. On the iPhone, your Queue can be found under the More tab on the bottom of the screen. On the iPad, your Queue is on the top right of the Hulu Plus app.
While in your Queue, find the video that you would like to remove and tap on the image. From there, select the “Remove from Queue” option. The video will then be deleted from your Queue across all of your devices.
If you tapped on the wrong video, tap anywhere else on the screen and the show options will disappear.