Remove duplicate SomaFM entries

[arno]

We don't need an mp3 and aac option listed for every station, just pick the most FOSS one and let it be

[arno]

@arno I fixed this by changing the area around line 113 in somafmservice.cpp

...
      RadioChannel channel;
      QString quality = obj_playlist["quality"].toString();
      QString format = obj_playlist["format"].toString();

      if ((quality != "highest") || (format != "aac")) continue;
      channel.source = source_;
      channel.name = name;
...

And then refreshing the channel list in Strawberry

I also removed the lines

      if (obj_playlist.contains("format")) {
        channel.name.append(" " + obj_playlist["format"].toString().toUpper());
      }

Unfortunately the github version doesn't respect the "use system icons" rule so now I'm recompiling from the Debian source version

I posted a patch file here
https://github.com/orgs/strawberrymusicplayer/discussions/1419#discussioncomment-9065392