COMPMID-1451 Move NEFlattenLayerKernel to the correct folder

Change-Id: I88793688e4175d409a022db1c2b6db6783d7feeb
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/147682
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
1 file changed