This obsoletes two of the included patches, one of them RISC-V specific,
since they've been picked up by upstream.

This build has been confirmed as being able to build and run an (extremely
recent) RISC-V Fedora 28 Rawhide image, available from:

    https://fedorapeople.org/groups/risc-v/disk-images/

Signed-off-by: Austin Seipp <aseipp@pobox.com>

easytag: add opus support

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/obs-studio/versions.

These checks were done:

- built on NixOS
- ran `/nix/store/3dqzcmdm5caax4gqr61k05hmxrs1ca5w-obs-studio-21.1.1/bin/obs -h` got 0 exit code
- ran `/nix/store/3dqzcmdm5caax4gqr61k05hmxrs1ca5w-obs-studio-21.1.1/bin/obs --help` got 0 exit code
- ran `/nix/store/3dqzcmdm5caax4gqr61k05hmxrs1ca5w-obs-studio-21.1.1/bin/.obs-wrapped -h` got 0 exit code
- ran `/nix/store/3dqzcmdm5caax4gqr61k05hmxrs1ca5w-obs-studio-21.1.1/bin/.obs-wrapped --help` got 0 exit code
- found 21.1.1 with grep in /nix/store/3dqzcmdm5caax4gqr61k05hmxrs1ca5w-obs-studio-21.1.1
- directory tree listing: https://gist.github.com/08175928e798aeee1fb0326677000c7c