fixup tdf#104986 move named parameters substitution into generic layer

remove now unused class member

Change-Id: I30ffcf60833580a5f0029fa4efef80507d7918df
Reviewed-on: https://gerrit.libreoffice.org/47524Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
Tested-by: Jenkins <ci@libreoffice.org>

connectivity/source/inc/java/sql/Connection.hxx

@@ -52,7 +52,6 @@ namespace connectivity
         jclass                  m_Driver_theClass;
         java::sql::ConnectionLog
                                 m_aLogger;
-        bool                    m_bParameterSubstitution;
         bool                    m_bIgnoreDriverPrivileges;
         bool                    m_bIgnoreCurrency;
         css::uno::Any           m_aCatalogRestriction;