[LIT][L0] enable global offset support test for level_zero. (#261)

Signed-off-by: rbegam <[email protected]>

Author: rbegam

SYCL/Basic/parallel_for_indexers.cpp

@@ -6,10 +6,6 @@
 // RUN: %GPU_RUN_PLACEHOLDER %t2.out
 // RUN: %ACC_RUN_PLACEHOLDER %t2.out
 
-// TODO: Unexpected result
-// TODO: _indexers.cpp:37: int main(): Assertion `id == -1' failed.
-// XFAIL: level_zero&&gpu
-
 #include <CL/sycl.hpp>
 
 #include <cassert>