spdxcheck.py: Fix a type error

remove unused variable "col", otherwise there will be a type error
as below:

typeerror: not all arguments converted during string formatting

Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220114024058.74536-1-dingxiang@cmss.chinamobile.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>