[nvnflinger,vk] suppress error & warning log spam (#3227)

on LM3 the log file can be up to 20MB/per minute

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3227
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>

src/core/hle/service/nvnflinger/buffer_queue_producer.cpp

@@ -930,7 +930,7 @@ void BufferQueueProducer::Transact(u32 code, std::span<const u8> parcel_data,
         break;
     }
     case TransactionId::GetBufferHistory:
-        LOG_WARNING(Service_Nvnflinger, "(STUBBED) called, transaction=GetBufferHistory");
+        LOG_DEBUG(Service_Nvnflinger, "(STUBBED) called, transaction=GetBufferHistory");
         break;
     default:
         ASSERT_MSG(false, "Unimplemented TransactionId {}", code);

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -1343,7 +1343,7 @@ void TextureCacheRuntime::ConvertImage(Framebuffer* dst, ImageView& dst_view, Im
     case PixelFormat::D32_FLOAT_S8_UINT:
     case PixelFormat::Invalid:
     default:
-        LOG_ERROR(Render_Vulkan, "Unimplemented texture conversion from {} to {} format type", src_view.format, dst_view.format);
+        LOG_DEBUG(Render_Vulkan, "Unimplemented texture conversion from {} to {} format type", src_view.format, dst_view.format);
         break;
     }
 }