Removed preview pane

Simplified the PR by removing the (as yet unused) preview pane.

contrib/previewers/win/README.md

@@ -1,6 +1,6 @@
 # Windows Previewers for Basis Universal
 
-Build using Visual Studio from 2012 onwards (building with 2017 onwards needs the [optional MFC and ATL support adding](https://developercommunity.visualstudio.com/comments/11241/view.html) used for the details pane). Enable from an Administrator console using `regsvr32 previewers.dll` (and remove using `regsvr32 /u previewers.dll`).
+Build using Visual Studio from 2012 onwards. Enable from an Administrator console using `regsvr32 previewers.dll` (and remove using `regsvr32 /u previewers.dll`).
 
 ![Icon and preview pane](preview.png)
 

contrib/previewers/win/previewers.vcxproj

@@ -182,9 +182,6 @@
       </PrecompiledHeader>
     </ClCompile>
   </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="preview.rc" />
-  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

contrib/previewers/win/previewers.vcxproj.filters

@@ -38,9 +38,4 @@
       <Filter>src</Filter>
     </ClCompile>
   </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="preview.rc">
-      <Filter>res</Filter>
-    </ResourceCompile>
-  </ItemGroup>
 </Project>