fftools/ffmpeg: stop printing PSNR information in status report

When an encoder exports sum-of-squared-differences information in
encoded packets, print_report() will print PSNR information in the
status line. However,
* the code computing PSNR assumes 8bit 420 video and prints incorrect
  values otherwise; there are no issues on trac about this
* only a few encoders (namely aom, vpx, mpegvideo, snow) export this
  information; other often-used encoders such as libx26[45] do not
  export this, even though they could

This suggests that this feature is not useful and it is better to remove
it rather than spend effort on fixing it.

0 files changed, 0 insertions, 0 deletions