Remove .wxi references

Author: joeloff

src/Layout/pkg/windows/msis/placeholder/product.wxs

@@ -1,6 +1,5 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs" xmlns:ui="http://wixtoolset.org/schemas/v4/wxs/ui">
-  <?include "Variables.wxi" ?>
   <Package UpgradeCode="$(UpgradeCode)" Version="$(ProductVersion)" Manufacturer="$(Manufacturer)" InstallerVersion="$(InstallerVersion)" Compressed="yes"
            Scope="perMachine" Language="$(ProductLanguage)" Name="$(ProductName)">
 

src/Layout/pkg/windows/msis/registrykeys.wxs

@@ -1,6 +1,5 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
-  <?include "Variables.wxi" ?>
   <Fragment>
     <ComponentGroup Id="AuthoredRegistryKeys_x86node">
       <Component Id="SetupRegistry" Directory="TARGETDIR" Bitness="always32">

src/Layout/pkg/windows/msis/templates/product.wxs

@@ -1,6 +1,5 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs" xmlns:ui="http://wixtoolset.org/schemas/v4/wxs/ui">
-  <?include "Variables.wxi" ?>
   <Package  UpgradeCode="$(UpgradeCode)" Version="$(ProductVersion)" Manufacturer="$(Manufacturer)" InstallerVersion="$(InstallerVersion)" Compressed="yes"
             Scope="perMachine" Language="$(ProductLanguage)" Name="$(ProductName)">
 

src/Layout/pkg/windows/msis/toolset/product.wxs

@@ -2,7 +2,6 @@
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs"
      xmlns:ui="http://wixtoolset.org/schemas/v4/wxs/ui"
      xmlns:util="http://wixtoolset.org/schemas/v4/wxs/util">
-  <?include "Variables.wxi" ?>
   <Package  UpgradeCode="$(UpgradeCode)" Version="$(ProductVersion)" Manufacturer="$(Manufacturer)" InstallerVersion="$(InstallerVersion)" Compressed="yes"
             Scope="perMachine" Language="$(ProductLanguage)" Name="$(ProductName)" >