appended license header

jams-common/src/main/java/net/jami/jams/common/dao/DeleteStatementBuilder.java

+/*
+* Copyright (C) 2020 by Savoir-faire Linux
+* Authors: William Enright <william.enright@savoirfairelinux.com>
+*          Ndeye Anna Ndiaye <anna.ndiaye@savoirfairelinux.com>
+*          Johnny Flores <johnny.flores@savoirfairelinux.com>
+*          Mohammed Raza <mohammed.raza@savoirfairelinux.com>
+*          Felix Sidokhine <felix.sidokhine@savoirfairelinux.com>
+*
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 package net.jami.jams.common.dao;
 
 import net.jami.jams.common.dao.connectivity.SQLConnection;