[pica-db-backup][mysql-run.sh] Don't do verbose logging for 'tar'

pica-db-backup/mysql-run.sh

@@ -42,7 +42,7 @@ BACKUP_NAME=\$DATE.sql
 echo "=> ${MYSQL_SERVICE_NAME}: Backup started: \${BACKUP_NAME}"
 if ${BACKUP_CMD} ;then
     echo " => Compress files $BACKUP_FOLDER\$DATE.tar.gz"
-    tar -czvf $BACKUP_FOLDER\$DATE.tar.gz $BACKUP_FOLDER\${BACKUP_NAME} && \
+    tar -czf $BACKUP_FOLDER\$DATE.tar.gz $BACKUP_FOLDER\${BACKUP_NAME} && \
     rm -rf $BACKUP_FOLDER\$BACKUP_NAME && \
     echo "${MYSQL_SERVICE_NAME}: Backup succeeded"
 else