The CMake policies CMP0002 and CMP0116 can now safely be removed.
Setting CMake minimum version to 3.20 ensures that policies are set to
NEW per default for those two policies:
> The cmake_minimum_required() command does more than report an error
> if a too-old version of CMake is used to build a project. It also sets
> all policies introduced in that CMake version or earlier to NEW
> behavior.
CMP0002 was introduced in CMake 2.6 and was set to NEW.
CMP0116 was introduced in CMake 3.20 and set to OLD because of:
> Use the old CMake behaviour until we are updating the CMake 3.20 as
> minimum required. This ensure that CMake >=3.20 will be consistent
> with older CMakes.
and can thus be removed as we are now having 3.20 as minimum required.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>