I just did this myself and disabled the DTC P1805 code with uprev, so far no issues at all, brake + gas working as expected without ecu interruption. For anyone looking to do this, the wire color is actually Pink (P), not purple, its the last ecu connector furthest from the firewall.
Be sure you cut the correct pink wire, the other pink wire is for the vehicle CAN.
Once you disconnect the plug and remove the pin cover you can trace the wire you want and cut or de-pin, I highlighted the wire here when looking from the back of the connector which is how the FSM picture phunk attached above shows it:
