How to Remove Advanced Pulldown?

Some camcorders, such as the Panasonic AG-DVX100A (which is what I have), are designed to shoot in progressive mode at 24 fps (literally 23.98 fps) and then record the video to tape as a 60-field interlaced signal by applying a special kind of pull-down called advanced 2:3:3:2 pull-down. With previous versions of Final Cut, you could remove the redundant fields created by the camera’s pull-down, so that you can edit at 23.98 fps or 24 fps.

This was done previously by the following:

1. In Final Cut Pro, select the clips or sequence.
2. Choose Tools > Remove Advanced Pulldown.

How do I do this in Final Cut Pro X?

These menus do not exist and when I drop a previously existing clip into a new project there are duplicate frames (whether I choose to create the project properties based on the properties of the first clip imported or I specify manually I want it to be a 23.98p timeline), meaning that FCPX has not removed the pulldown automatically.

When I import a clip from tape/source then FCPX handles it correctly.

But there needs to be an option to fix this in already existing clips that have been imported prior to the existence of FCPX without re-importing all the footage.