spitools: remove unused BPV variable
spitools: remove unused BPV variable

This variable isn't longer used to set the PV value.

Signed-off-by: Thomas Perrot <08faf6a7eddad76b7c6e9d3834265bf1db38857a@bootlin.com>
Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded