API CHANGE: Update ma_noise_uninit().

This removes the allocations callback parameter. It is no managed
internally in preparation for some changes to data source management.

tests/generation/generation_noise.c

@@ -31,7 +31,7 @@ ma_result test_noise__by_format_and_type(ma_format format, ma_noise_type type, c
     }
 
     ma_encoder_uninit(&encoder);
-    ma_noise_uninit(&noise, NULL);
+    ma_noise_uninit(&noise);
     return MA_SUCCESS;
 }