- Delete unused lang files in client module

interface/web/client/lib/lang/de_client_list.lng

interface/web/client/lib/lang/de_users_list.lng

interface/web/client/lib/lang/en_client_list.lng

interface/web/client/lib/lang/en_users_list.lng

interface/web/client/lib/lang/fr_reseller.lng

interface/web/client/lib/lang/fr_resellers_list.lng

interface/web/client/lib/lang/fr_users_list.lng

interface/web/client/lib/lang/it.lng

interface/web/client/lib/lang/it_client.lng

interface/web/client/lib/lang/it_clients_list.lng

interface/web/client/lib/lang/nl_client_list.lng

interface/web/client/lib/lang/nl_users_list.lng

interface/web/client/lib/lang/ru_client_list.lng

interface/web/client/lib/lang/ru_users_list.lng

interface/web/client/lib/lang/se_reseller.lng

interface/web/client/lib/lang/se_resellers_list.lng

interface/web/client/lib/lang/se_users_list.lng