Remove mention of Handbrake from playing_videos.rst (#10732)

* Remove mention of Handbrake from playing_videos.rst

Handbrake removed support for OGG in 2009(!) so it is not valid recommendation of tool for the job. Downloaded Handbrake and confirmed it can't export Ogg Theora

tutorials/animation/playing_videos.rst

@@ -182,9 +182,8 @@ you should use a lossless or uncompressed format as an intermediate format to
 maximize the quality of the output Ogg Theora video, but this can require a lot
 of disk space.
 
-`HandBrake <https://handbrake.fr/>`__
-(GUI) and `FFmpeg <https://ffmpeg.org/>`__ (CLI) are popular open source tools
-for this purpose. FFmpeg has a steeper learning curve, but it's more powerful.
+`FFmpeg <https://ffmpeg.org/>`__ (CLI) is a popular open source tool
+for this purpose. FFmpeg has a steep learning curve, but it's powerful tool.
 
 Here are example FFmpeg commands to convert an MP4 video to Ogg Theora. Since
 FFmpeg supports a lot of input formats, you should be able to use the commands