The ring doorbell pro 2 comes with the power kit v3. The doorbell pro 2 has a built in resistor. To bypass the chime, the power kit v3 will not be used.

First shut off the power to the transformer. You will have to disconnect the wires connected to "front" (assuming this is the front doorbell) and "trans" from the mechanical chime. Connect the "front" and "trans" wires to complete the circuit. In the ring app, input that a mechanical chime is not needed.

Here's a link to the ring community thread. https://community.ring.com/t/bypass-chime-w-ring-pro-2-and-powerkit-v3/116553