scripts/spdxcheck: Parse j2 comments correctly

j2 files use '#}' as comment closure, which trips up the SPDX
parser:

 tools/.../definition.j2: 1:36 Invalid token: #}

Handle those comments correctly by removing the closure.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/878qt2xr46.ffs@tglx


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