How do I shut off the very loud end of cycle sound in maytag ldg8506AAM gas dryer

This buzzer is non-adjustable. Click the link below, provided by, www.repairclinic.com to view this part so that you can identify it in the control panel of the dryer. You can remove the wires from it to make it inoperable. You can also get disassembly instructions at their site.

Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.
http://www.repairclinic.com/Appliance-Parts?s=t-ldg8506AAM-%3d%3d&n=5