Removed superflous namespace creation line

Author: oleksandr-pavlyk

dpctl/tensor/libtensor/include/kernels/elementwise_functions/isfinite.hpp

@@ -46,7 +46,6 @@ namespace isfinite
 
 namespace py = pybind11;
 namespace td_ns = dpctl::tensor::type_dispatch;
-namespace exprm_ns = sycl::ext::oneapi::experimental;
 
 using dpctl::tensor::type_utils::is_complex;
 using dpctl::tensor::type_utils::vec_cast;