fpga: dfl: remove unneeded function build_info_create_dev()

fpga: dfl: remove unneeded function build_info_create_dev()

Remove the function build_info_create_dev(), which no longer serves its
original purpose now that the allocation of the platform device has been
moved to feature_dev_register().

Signed-off-by: Peter Colberg <peter.colberg@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Reviewed-by: Basheer Ahmed Muddebihal <basheer.ahmed.muddebihal@linux.intel.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20241120011035.230574-17-peter.colberg@intel.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>