ReSpeaker 2-Mics Pi HAT SPI_MOSI SPI_SCLK

Hello.
What does the
ReSpeaker 2-Mics-Pi the GPIOs 19 and 23? What kind of component is that? I’ve attached the schematic. I would like to use 2.4ghz radio communication and need this GPIOS for it and would otherwise remove these from
ReSpeaker 2-Mics Pi.