VS: Remove unused parameter of WriteTargetConfigurations

The cmGlobalVisualStudio7Generator::WriteTargetConfigurations
'root' parameter is no longer used, so remove it.

Source/cmGlobalVisualStudio71Generator.cxx

@@ -118,7 +118,7 @@ void cmGlobalVisualStudio71Generator
   fout << "\tGlobalSection(" << this->ProjectConfigurationSectionName
        << ") = postSolution\n";
   // Write out the configurations for all the targets in the project
-  this->WriteTargetConfigurations(fout, root, orderedProjectTargets);
+  this->WriteTargetConfigurations(fout, orderedProjectTargets);
   fout << "\tEndGlobalSection\n";
 
   if (useFolderProperty)

Source/cmGlobalVisualStudio7Generator.cxx

@@ -366,7 +366,6 @@ void cmGlobalVisualStudio7Generator::OutputSLNFile()
 
 void cmGlobalVisualStudio7Generator::WriteTargetConfigurations(
   std::ostream& fout,
-  cmLocalGenerator* root,
   OrderedTargetDependSet const& projectTargets)
 {
   // loop over again and write out configurations for each target
@@ -578,7 +577,7 @@ void cmGlobalVisualStudio7Generator
 
   // Write out the configurations for all the targets in the project
   fout << "\tGlobalSection(ProjectConfiguration) = postSolution\n";
-  this->WriteTargetConfigurations(fout, root, orderedProjectTargets);
+  this->WriteTargetConfigurations(fout, orderedProjectTargets);
   fout << "\tEndGlobalSection\n";
 
   // Write out global sections

Source/cmGlobalVisualStudio7Generator.h

@@ -150,7 +150,6 @@ protected:
     OrderedTargetDependSet const& projectTargets);
   virtual void WriteTargetConfigurations(
     std::ostream& fout,
-    cmLocalGenerator* root,
     OrderedTargetDependSet const& projectTargets);
 
   void GenerateConfigurations(cmMakefile* mf);