First part of '[ 1216148 ] cleanup: unused variables and declarations'.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34582 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/mimetype.cpp

@@ -787,7 +787,6 @@ bool wxFileTypeImpl::RemoveCommand(const wxString& verb)
     wxCHECK_MSG( !m_ext.empty() && !verb.empty(), false,
                  _T("RemoveCommand() needs an extension and a verb") );
 
-    wxString  sKey = m_strFileType;
     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 
     // if the key already doesn't exist, it's a success