BMI270 4 Wire SPI Wiring

Hi

I am trying to interface the BMI270 with an STM32F7 mcu, i will be using it in 4 Wire SPI mode, in my applcation i will be using only the INT1 interrupt line.

the question is what should i do to the INT2 pin? should I keep it floating or it needs some sort of connection?

Note that the BMI270 will be used as a standalone unit inside a ocb and no shuttle board is used.

Thanks