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SPDX v3.10 gained support for GFDL-1.1 with no invariant sections:

	https://spdx.org/licenses/GFDL-1.1-no-invariants-or-later.html



So, remove the license text, replacing them by this new SPDX
license.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>