cvCreateCameraCapture: fix using preffered interface
cvCreateCameraCapture: fix using preffered interface

The provided interface id must be removed from the index. Otherwise, the
underlying implementations are using a wrong camera id.

Example:
VideoCapture(800) fails because PvAPI tries to open a camera
on position 800

opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv