Core/ConfigManager: Remove duplicate HiresTexture::Update

Resolves duplicate OSD messages for Loading and Found custom textures.
Upon VideoBackend initialization HiresTexture::Init will be called, which
calls Update. Since this occurs whenever a game is launched, it is
unnecessary to also call HiresTexture::Update in ConfigManager for boot.

Source/Core/Core/ConfigManager.cpp

@@ -212,7 +212,6 @@ void SConfig::OnNewTitleLoad(const Core::CPUThreadGuard& guard)
   CBoot::LoadMapFromFilename(guard, ppc_symbol_db);
   HLE::Reload(system);
   PatchEngine::Reload(system);
-  HiresTexture::Update();
   WC24PatchEngine::Reload();
 }