vfio/pci.c: Remove double include for assert.h

assert.h is included twice, keep only one instance.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Link: https://lore.kernel.org/r/20211012132510.42134-3-alexandru.elisei@arm.com


Signed-off-by: Will Deacon <will@kernel.org>