EM7455, termination resistor at Aux necessary?

I use an EM7455 which has antenna connectors for Main, GPS and Aux. At Aux no antenna is connected. Is it necessary to use a terminating resistor? Thanks for your support.

You can disable RX diversity by AT!RXDEN=0. Please refer to the AT command guide 4117727 about the AT!RXDEN for the details.