After getting my prototype PCBs back from JLCPCB, I needed to make some changes.  I created a Rev 2 of my project and edited the schematic. The changes were to replace 3 connectors with new ones that were the right size.  I then transferred the changes to the PCB layout workspace.  Included with the connector changes was the addition of R10 which exists in the schematic one time and has been there from early saves of Rev 1.  Where did this resistor come from and what should I do with it?