SDL: audio: Removed declarations of functions that don't exist anymore.

From 62d4459972546dff057c6d36e9dba76fd49f5329 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Wed, 20 Sep 2023 10:20:35 -0400
Subject: [PATCH] audio: Removed declarations of functions that don't exist
 anymore.

---
 src/audio/SDL_sysaudio.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/audio/SDL_sysaudio.h b/src/audio/SDL_sysaudio.h
index abd16e800b06..4212abce336b 100644
--- a/src/audio/SDL_sysaudio.h
+++ b/src/audio/SDL_sysaudio.h
@@ -331,7 +331,4 @@ extern AudioBootStrap N3DSAUDIO_bootstrap;
 extern AudioBootStrap EMSCRIPTENAUDIO_bootstrap;
 extern AudioBootStrap QSAAUDIO_bootstrap;
 
-extern SDL_AudioDevice *get_audio_dev(SDL_AudioDeviceID id);
-extern int get_max_num_audio_dev(void);
-
 #endif // SDL_sysaudio_h_