onnx: remove unlikely macro (#1847)
onnx: remove unlikely macro (#1847)

Signed-off-by: Artur Wojcik <ea75e86c6673ace627dcd6a91fbef5d4fea719d0@intel.com>
NervanaSystems/ngraph,NervanaSystems/ngraph,NervanaSystems/ngraph,NervanaSystems/ngraph