remove XFAIL

Author: VyacheslavLevytskyy

sycl/test-e2e/Reduction/reduction_nd_N_vars.cpp

@@ -4,10 +4,6 @@
 // Windows doesn't yet have full shutdown().
 // UNSUPPORTED: ze_debug && windows
 
-// Depends on SPIR-V Backend & run-time drivers version.
-// XFAIL: spirv-backend && gpu
-// XFAIL-TRACKER: CMPLRLLVM-64705
-
 // This test checks handling of parallel_for() accepting nd_range and
 // two or more reductions.