There may be some restrictions on removing special effects from other people's videos in clips, because clips are mainly used for simple video editing on mobile devices. The following is a possible method:

Import Video: Open the clip application and import the video to be edited.

Divide the special effects part: find the special effects part on the time axis and divide it into several pieces.

Delete special effects clip: select the clip with special effects added, and click "Delete" button to delete it.

Adjust the transition of the clip: If necessary, you may need to adjust the transition of the clip after removing the special effects to ensure the fluency and continuity of the video.

Preview and Save: Preview the modified video in the clipping block to ensure that the special effects have been removed. If you are satisfied, you can export and save a new video file.

Please note that clipping is a simple video editing tool on mobile devices, and its functions may be limited. If you need more advanced video editing functions, you may need to consider using professional video editing software.