CMake: Remove unused member from CMakeBuildConfiguration

Change-Id: I2a4dda889400ad48fbcd8ed25fe583eac34fbaa0
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -85,7 +85,6 @@ CMakeBuildConfiguration::CMakeBuildConfiguration(ProjectExplorer::Target *parent
 CMakeBuildConfiguration::CMakeBuildConfiguration(ProjectExplorer::Target *parent,
                                                  CMakeBuildConfiguration *source) :
     BuildConfiguration(parent, source),
-    m_msvcVersion(source->m_msvcVersion),
     m_initialArguments(source->m_initialArguments)
 {
     Q_ASSERT(parent);

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -69,7 +69,6 @@ protected:
     bool fromMap(const QVariantMap &map);
 
 private:
-    QString m_msvcVersion;
     QString m_initialArguments;
 
     friend class CMakeProjectManager::CMakeProject;