ArmPkg/ArmLib: remove NullArmLib

Remove the NULL instance of ArmLib: it is not currently used, and its
usefulness its dubious.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
3 files changed