Removed UWP SettingsServiceImplementation

Author: davidbritch

src/Mobile/eShopOnContainers/eShopOnContainers.Windows/Services/SettingsServiceImplementation.cs

@@ -123,7 +123,6 @@
     <Compile Include="Renderers\CustomTabbedPageRenderer.cs" />
     <Compile Include="Renderers\SlideDownMenuPageRenderer.cs" />
     <Compile Include="Services\LocationServiceImplementation.cs" />
-    <Compile Include="Services\SettingsServiceImplementation.cs" />
   </ItemGroup>
   <ItemGroup>
     <AppxManifest Include="Package.appxmanifest">