Stop keeping static Reductor in viennacl::linalg::inner_prod
Stop keeping static Reductor in viennacl::linalg::inner_prod

The current implementation of Reductor does not need that.

Poulpy21/vexcl,ddemidov/vexcl,Poulpy21/vexcl,Poulpy21/vexcl,kapadia/vexcl,kapadia/vexcl,ddemidov/vexcl