Removed Settings from Design projects

Settings is not needed. It's a self-contained library.
We don't need to have to tweak any behaviour for the Design surface right now.

Author: Nirmal4G

Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.Design/Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.Design.csproj

@@ -95,27 +95,18 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
-    <Compile Include="Properties\Settings.Designer.cs">
-      <AutoGen>True</AutoGen>
-      <DependentUpon>Settings.settings</DependentUpon>
-      <DesignTimeSharedInput>True</DesignTimeSharedInput>
-    </Compile>
     <Compile Include="Common\ToolboxCategoryPaths.cs" />
     <Compile Include="DataGridMetadata.cs" />
     <EmbeddedResource Include="Properties\Resources.resx">
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-    <None Include="Properties\Settings.settings">
-      <Generator>SettingsSingleFileGenerator</Generator>
-      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
-    </None>
     <AppDesigner Include="Properties\" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="..\Microsoft.Toolkit.Uwp.UI.Controls.DataGrid\bin\$(Configuration)\uap10.0.16299\Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.xml">
       <Link>Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.xml</Link>
-      <SubType>Designer</SubType>
+      <Visible>False</Visible>
     </EmbeddedResource>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

Microsoft.Toolkit.Uwp.UI.Controls.DataGrid.Design/Properties/Settings.Designer.cs

@@ -115,11 +115,6 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
-    <Compile Include="Properties\Settings.Designer.cs">
-      <AutoGen>True</AutoGen>
-      <DependentUpon>Settings.settings</DependentUpon>
-      <DesignTimeSharedInput>True</DesignTimeSharedInput>
-    </Compile>
     <Compile Include="Common\ToolboxCategoryPaths.cs" />
     <Compile Include="RadialGaugeMetadata.cs" />
     <Compile Include="RadialProgressBarMetadata.cs" />
@@ -133,16 +128,12 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-    <None Include="Properties\Settings.settings">
-      <Generator>SettingsSingleFileGenerator</Generator>
-      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
-    </None>
     <AppDesigner Include="Properties\" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="..\Microsoft.Toolkit.Uwp.UI.Controls\bin\$(Configuration)\uap10.0.16299\Microsoft.Toolkit.Uwp.UI.Controls.xml">
       <Link>Microsoft.Toolkit.Uwp.UI.Controls.xml</Link>
-      <SubType>Designer</SubType>
+      <Visible>False</Visible>
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>