Both rate control methods only work on hardware encoders and will error
out when selected for software encoders, so we shouldn't show them there
Co-Authored-By: Sebastian Beckmann <beckmann.sebastian@outlook.de>
The session_set_bitrate method already returns an OSStatus to confirm
that everything has been successful. As such, a second check to make
sure that the bitrate has indeed changed is redundant and only adds
unnecessary code.
