Remove the miniaudio submodule.

Nothing has pulled it in since the audio backend moved to SDL, so drop the
submodule along with its license entry and its nix input.

.gitmodules

@@ -52,9 +52,6 @@
 [submodule "third_party/zep"]
 	path = third_party/zep
 	url = https://github.com/grumpycoders/zep.git
-[submodule "third_party/miniaudio"]
-	path = third_party/miniaudio
-	url = https://github.com/mackron/miniaudio.git
 [submodule "third_party/capstone"]
 	path = third_party/capstone
 	url = https://github.com/capstone-engine/capstone.git

LICENSES.md

@@ -49,7 +49,6 @@ find a link to the vendored version itself.
  - [luv](https://github.com/luvit/luv)
  - [magic_enum](https://github.com/Neargye/magic_enum)
  - [md4c](https://github.com/mity/md4c)
- - [miniaudio](https://github.com/mackron/miniaudio)
  - [multipart-parser-c](https://github.com/iafonov/multipart-parser-c)
  - [nanosvg](https://github.com/memononen/nanosvg) ([vendored](https://github.com/grumpycoders/nanosvg))
  - [nanovg](https://github.com/memononen/nanovg) ([vendored](https://github.com/grumpycoders/nanovg))

pcsx-redux.nix

@@ -16,7 +16,6 @@
   multipart-parser-c,
   fmt,
   magic-enum,
-  miniaudio,
   gtest,
   tl-expected,
   elfio,
@@ -141,7 +140,6 @@ in stdenv.mkDerivation {
     ucl
     md4c
     luajitPackages.libluv
-    miniaudio
     multipart-parser-c
     fmt
     magic-enum