obsolete nhlan.c follow-up

- visual studio project files
- .gitattributes

sys/windows/vs/NetHack/NetHack.vcxproj

@@ -162,7 +162,6 @@
     <ClCompile Include="$(SrcDir)write.c" />
     <ClCompile Include="$(SrcDir)zap.c" />
     <ClCompile Include="$(SysShareDir)cppregex.cpp" />
-    <ClCompile Include="$(SysShareDir)nhlan.c" />
     <ClCompile Include="$(SysShareDir)random.c" />
     <ClCompile Include="$(SysWindDir)ntsound.c" />
     <ClCompile Include="$(SysWindDir)consoletty.c" />
@@ -268,4 +267,4 @@
   <Target Name="AfterRebuild">
     <MSBuild Projects="afternethack.proj" Targets="Build" Properties="Configuration=$(Configuration)" />
   </Target>
-</Project>
+</Project>