pin PA15 used multiple times in config

I wanted to connect an OctoPix RGB Neopixel Expansion Board to SPI3 to control the corner LEDs on the VCore 4, but when using the pins PB15, PB5, PB4, and PB3, I get an error because they are being used by the ADXL345 in RatOS. How can I disable or comment out that part in RatOS?