Remove conditional __EMSCRIPTEN__

Not required anymore

src/raudio.c

@@ -422,9 +422,6 @@ void InitAudioDevice(void)
     config.sampleRate = AUDIO_DEVICE_SAMPLE_RATE;
     config.dataCallback = OnSendAudioDataToDevice;
     config.pUserData = NULL;
-#if defined(__EMSCRIPTEN__)
-    config.periodSizeInMilliseconds = 33;
-#endif
 
     result = ma_device_init(&AUDIO.System.context, &config, &AUDIO.System.device);
     if (result != MA_SUCCESS)