VcsBase: Remove unused settings member

Change-Id: I3247a639d9607a4acbf5477302e1f2860325a0e6
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/vcsbase/vcsbaseclientsettings.h

@@ -23,9 +23,6 @@ public:
     Utils::StringAspect path;
 
     Utils::FilePaths searchPathList() const;
-
-private:
-    QString m_settingsGroup;
 };
 
 } // namespace VcsBase