pylibfdt: setup.py: Drop license_files

On more recent versions of setuptools the warning about not being able
to find the files specified in license_files has re-appeared. This is
because as best I can tell, it can't and won't look in $(srctree) but
rather only subdirectories of scripts/dtc/pylibfdt. Since we already
provide both SPDX tags and a license field with the SPDX contents, let
us just drop license_files as it's not mandatory.

Signed-off-by: Tom Rini <trini@konsulko.com>

scripts/dtc/pylibfdt/setup.py

@@ -158,7 +158,6 @@ setup(
     long_description_content_type="text/plain",
     url="https://git.kernel.org/pub/scm/utils/dtc/dtc.git",
     license="GPL-2.0-or-later OR BSD-2-Clause",
-    license_files=["Licenses/gpl-2.0.txt", "Licenses/bsd-2-clause.txt"],
 
     classifiers=[
         "Programming Language :: Python :: 3",