Desolder the four pins of the antenna port.

Do not place the soldering iron on the wrong terminals as this can cause the device to no longer to function.

How To Solder and Desolder Connections is iFixit's official guide on how to use a soldering iron

You will need a soldering iron that is capable of reaching temperatures greater than 300 degrees Fahrenheit.

Temperature of the component will be very hot when desoldered, take precaution when handling.