Removed duplicated code from core modules

htdocs/core/modules/modAccounting.class.php

htdocs/core/modules/modAdherent.class.php

htdocs/core/modules/modAgenda.class.php

htdocs/core/modules/modApi.class.php

htdocs/core/modules/modAskPriceSupplier.class.php

htdocs/core/modules/modBanque.class.php

htdocs/core/modules/modBarcode.class.php

htdocs/core/modules/modBookmark.class.php

htdocs/core/modules/modCashDesk.class.php

htdocs/core/modules/modCategorie.class.php

htdocs/core/modules/modClickToDial.class.php

htdocs/core/modules/modCommande.class.php

htdocs/core/modules/modComptabilite.class.php

htdocs/core/modules/modContrat.class.php

htdocs/core/modules/modCron.class.php

htdocs/core/modules/modDeplacement.class.php

htdocs/core/modules/modDocumentGeneration.class.php

htdocs/core/modules/modDon.class.php

htdocs/core/modules/modDynamicPrices.class.php

htdocs/core/modules/modECM.class.php