Guest User removed from nereid #5255

* Guest user is now part of nereid-cart-b2c module

Please refer: openlabs/nereid@f76ff02101 and
openlabs/nereid-cart-b2c@f9415d1614d10e990c38103b26783bb9c1cd03d9
Merge pull request #41 from prakashpp/remove-guest-user

Guest User removed from nereid #5255