To remove the barcode from your invoices and statements, go to your Options page and then click the Billing button. Then a "Program Settings - Billing" window will appear and you will see a check box near the top to "display barcode on invoices and statements." Un check it and barcodes will no longer be printed on them.
To remove barcodes from your daily schedules, go to your Schedule page and click the Print Jobs button. A "Print Scheduled Jobs" window will appear and then you can uncheck the "Print barcode with scheduled job" check box.