Remove unused code example file for TokenizingTextBox sample

Microsoft.Toolkit.Uwp.SampleApp/Microsoft.Toolkit.Uwp.SampleApp.csproj

@@ -1041,7 +1041,6 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
-    <Content Include="SamplePages\TokenizingTextBox\TokenizingTextBoxCode.bind" />
     <Content Include="SamplePages\TokenizingTextBox\TokenizingTextBoxXaml.bind">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/TokenizingTextBox/TokenizingTextBoxCode.bind

@@ -1 +0,0 @@
-

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -457,7 +457,6 @@
         "About": "A text input control that makes suggestions and keeps track of data token items",
         "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI.Controls/TokenizingTextBox",
         "XamlCodeFile": "TokenizingTextBoxXaml.bind",
-        "CodeFile": "TokenizingTextBoxCode.bind",
         "Icon": "/SamplePages/TokenizingTextBox/TokenizingTextBox.png",
         "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/controls/TokenizingTextBox.md"
       }