Change PlatformToolset back to v140

Author: REDMOND\jingf

Samples/BatchSupport/BatchSupport/BatchSupport.vcxproj

@@ -44,7 +44,7 @@
   </ItemGroup>
   <PropertyGroup Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v140</PlatformToolset>
     <PlatformToolset Condition="'$(VisualStudioVersion)' == '15.0'">v141</PlatformToolset>
     <PlatformToolset Condition="'$(VisualStudioVersion)' == '16.0'">v142</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>