COMPMID-784: Winograd refactoring

Removed the code that created a subtensor and imported memory from the workspace in the function run() method.

The subtensor is no longer needed because we perform the reordering of the tensors with NEPermute. The call to the method
winograd::Winograd2x2_3x3GEMM<TOut, TIn>::reshape_output() will transform the results from the winograd domain
into the spatial domain and this will be stored in the member _output_nhwc.

Change-Id: Iae09d26c7587cd2eed98968c3ce214e20031038e
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/115483
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
3 files changed