[SYCL][CUDA] Re-enable same_unnamed_kernels test (intel#9942)

I believe the issue was that the tests wasn't getting the CUDA target
flags properly and this would have been fixed as part of the E2E tests
rework (in intel#9336).

Fixes: intel#9174

sycl/test-e2e/Regression/same_unnamed_kernels.cpp

@@ -1,9 +1,6 @@
 // RUN: %{build} -o %t.out
 // RUN: %{run} %t.out
 
-// Temporarily disabled on CUDA: https://github.com/intel/llvm/issues/9174
-// UNSUPPORTED: cuda
-
 //==----- same_unnamed_kernels.cpp - SYCL kernel naming variants test ------==//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.