revert changes

Author: AlexanderSinn

src/Base/RealVect.cpp

@@ -13,12 +13,6 @@
 #include <optional>
 #include <vector>
 
-#if (AMREX_SPACEDIM == 3)
-namespace {
-    using pyamrex_realvect_crossproduct_f = amrex::RealVect (amrex::RealVect::*)(const amrex::RealVect&) const noexcept;
-    pyamrex_realvect_crossproduct_f pyamrex_realvect_crossproduct = &amrex::RealVect::crossProduct;
-}
-#endif
 
 void init_RealVect(py::module &m) {
     using namespace amrex;
@@ -99,7 +93,7 @@ void init_RealVect(py::module &m) {
           .def(py::self * py::self)
           .def("dotProduct", &RealVect::dotProduct, "Return dot product of this vector with another")
 #if (AMREX_SPACEDIM == 3)
-          .def("crossProduct", pyamrex_realvect_crossproduct, "Return cross product of this vector with another")
+          .def("crossProduct", &RealVect::crossProduct<>, "Return cross product of this vector with another")
 #endif
           .def("__mul__",
                py::overload_cast<Real>(&RealVect::operator*, py::const_))