[SYCL] Reenable enqueue-arg-order tests on CUDA (#519)

The tests were disabled due to
intel/llvm#4171, which has been resolved.

Author: sergey-semenov

SYCL/Plugin/enqueue-arg-order-buffer.cpp

@@ -1,5 +1,4 @@
-// Temporarily disabled due to CUDA context related failures.
-// UNSUPPORTED: cuda || hip_nvidia
+// UNSUPPORTED: hip_nvidia
 // RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple  %s -o %t.out
 // RUN: env SYCL_PI_TRACE=2 %GPU_RUN_PLACEHOLDER %t.out %GPU_CHECK_PLACEHOLDER
 // RUN: env SYCL_PI_TRACE=2 %CPU_RUN_PLACEHOLDER %t.out %CPU_CHECK_PLACEHOLDER

SYCL/Plugin/enqueue-arg-order-image.cpp

@@ -1,5 +1,4 @@
-// Temporarily disabled due to CUDA context related failures.
-// UNSUPPORTED: cuda || hip
+// UNSUPPORTED: hip
 // RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple  %s -o %t.out
 // Native images are created with host pointers only with host unified memory
 // support, enforce it for this test.