More removal of unused code and cleanup
Cleanup within the parameter options of the encoder and decoder and fixing of the issues mentioned by @benjamin.gaignard
Passes the usual tests H264 & HEVC fluster, encoder: gst-launch-1.0 videotestsrc num-buffers=300 ! v4l2h264enc ! h264parse ! qtmux ! filesink location=test.mp4
and compliance for both encoder and decoder.