Merge commit '3303f864'

* commit '3303f864':
  nvenc: Remove qmin and qmax constraints for nvenc vbr

[10:06:59 CEST] <BtbN> jamrial, 3303f864 is a no-op. NV_ENC_PARAMS_RC_2_PASS_VBR is a deprecated rc mode(http://git.videolan.org/?p=ffmpeg.git;a=blob;f=compat/nvenc/nvEncodeAPI.h;h=c3a829421282d5f22f82fc285723f13eb660f053;hb=HEAD#l268).
[10:07:14 CEST] <BtbN> And the first hunk with qmin/qmax was applied to ffmpeg quite a while ago already.
[10:07:49 CEST] <BtbN> In a slightly different fashion, but with the same effect
[10:07:58 CEST] <BtbN> Came as a patch from nvidia iirc
Merged-by: James Almer <jamrial@gmail.com>