audio: Remove no-longer-used SupportsNonPow2Samples

src/audio/SDL_sysaudio.h

@@ -126,7 +126,6 @@ typedef struct SDL_AudioDriverImpl
     SDL_bool OnlyHasDefaultOutputDevice;
     SDL_bool OnlyHasDefaultCaptureDevice;
     SDL_bool AllowsArbitraryDeviceNames;
-    SDL_bool SupportsNonPow2Samples;
 } SDL_AudioDriverImpl;
 
 typedef struct SDL_AudioDriver

src/audio/alsa/SDL_alsa_audio.c

@@ -970,7 +970,6 @@ static SDL_bool ALSA_Init(SDL_AudioDriverImpl *impl)
     impl->FlushCapture = ALSA_FlushCapture;
 
     impl->HasCaptureSupport = SDL_TRUE;
-    impl->SupportsNonPow2Samples = SDL_TRUE;
 
     return SDL_TRUE; /* this audio target is available. */
 }

src/audio/coreaudio/SDL_coreaudio.m

@@ -947,7 +947,6 @@ static SDL_bool COREAUDIO_Init(SDL_AudioDriverImpl *impl)
 
     impl->ProvidesOwnCallbackThread = SDL_TRUE;
     impl->HasCaptureSupport = SDL_TRUE;
-    impl->SupportsNonPow2Samples = SDL_TRUE;
 
     return SDL_TRUE; /* this audio target is available. */
 }

src/audio/directsound/SDL_directsound.c

@@ -644,7 +644,6 @@ static SDL_bool DSOUND_Init(SDL_AudioDriverImpl *impl)
     impl->GetDefaultAudioInfo = DSOUND_GetDefaultAudioInfo;
 
     impl->HasCaptureSupport = SDL_TRUE;
-    impl->SupportsNonPow2Samples = SDL_TRUE;
 
     return SDL_TRUE; /* this audio target is available. */
 }

src/audio/disk/SDL_diskaudio.c

@@ -171,7 +171,6 @@ static SDL_bool DISKAUDIO_Init(SDL_AudioDriverImpl *impl)
 
     impl->AllowsArbitraryDeviceNames = SDL_TRUE;
     impl->HasCaptureSupport = SDL_TRUE;
-    impl->SupportsNonPow2Samples = SDL_TRUE;
 
     return SDL_TRUE; /* this audio target is available. */
 }

src/audio/wasapi/SDL_wasapi.c

@@ -598,7 +598,6 @@ static SDL_bool WASAPI_Init(SDL_AudioDriverImpl *impl)
     impl->Deinitialize = WASAPI_Deinitialize;
     impl->GetDefaultAudioInfo = WASAPI_GetDefaultAudioInfo;
     impl->HasCaptureSupport = SDL_TRUE;
-    impl->SupportsNonPow2Samples = SDL_TRUE;
 
     return SDL_TRUE; /* this audio target is available. */
 }