cmGlobalVisualStudioGenerator: Remove unused folder support rules

Folders are supported on all versions of VS for which we still have
generators.

Source/cmGlobalVisualStudio11Generator.cxx

@@ -103,15 +103,6 @@ bool cmGlobalVisualStudio11Generator::SelectWindowsStoreToolset(
     toolset);
 }
 
-bool cmGlobalVisualStudio11Generator::UseFolderProperty() const
-{
-  // Intentionally skip up to the top-level class implementation.
-  // Folders are not supported by the Express editions in VS10 and earlier,
-  // but they are in VS11 Express and above.
-  // NOLINTNEXTLINE(bugprone-parent-virtual-call)
-  return cmGlobalGenerator::UseFolderProperty();
-}
-
 std::set<std::string>
 cmGlobalVisualStudio11Generator::GetInstalledWindowsCESDKs()
 {

Source/cmGlobalVisualStudio11Generator.h

@@ -47,7 +47,6 @@ protected:
   bool IsWindowsPhoneToolsetInstalled() const;
   bool IsWindowsStoreToolsetInstalled() const;
 
-  bool UseFolderProperty() const override;
   static std::set<std::string> GetInstalledWindowsCESDKs();
 
   /** Return true if target system supports debugging deployment. */

Source/cmGlobalVisualStudio71Generator.h

@@ -46,8 +46,5 @@ protected:
     cmValue typeGuid,
     std::set<BT<std::pair<std::string, bool>>> const& depends) const override;
 
-  // Folders are not supported by VS 7.1.
-  bool UseFolderProperty() const override { return false; }
-
   std::string ProjectConfigurationSectionName;
 };

Source/cmGlobalVisualStudio8Generator.cxx

@@ -218,12 +218,6 @@ std::string cmGlobalVisualStudio8Generator::GetGenerateStampList()
   return "generate.stamp.list";
 }
 
-bool cmGlobalVisualStudio8Generator::UseFolderProperty() const
-{
-  // NOLINTNEXTLINE(bugprone-parent-virtual-call)
-  return IsExpressEdition() ? false : cmGlobalGenerator::UseFolderProperty();
-}
-
 bool cmGlobalVisualStudio8Generator::AddCheckTarget()
 {
   // Add a special target on which all other targets depend that

Source/cmGlobalVisualStudio8Generator.h

@@ -84,8 +84,6 @@ protected:
                            std::string const& path,
                            cmGeneratorTarget const* t) const override;
 
-  bool UseFolderProperty() const override;
-
   std::string Name;
   std::string WindowsCEVersion;