Removed normalization from importer. (#4593)
Removed normalization from importer. (#4593)

Co-authored-by: Evgenya Stepyreva <7bf82a66b8b2789b503f5884c998bf78ef01cd17@intel.com>
NervanaSystems/ngraph,NervanaSystems/ngraph,NervanaSystems/ngraph,NervanaSystems/ngraph