Merge pull request intel#1525 from smaslov-intel/buffer_migrate

[SYCL] Do not rely on experimental CreateMultipleRootDevices (intel#1471)

Author: smaslov-intel

SYCL/Basic/buffer/buffer_migrate.cpp

@@ -1,10 +1,6 @@
-// The test is flaky, disable until investigated/fixed.
-// REQUIRES: TEMPORARILY_DISABLED
 // REQUIRES: gpu
 // RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple %s -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
-// RUN: env NEOReadDebugKeys=1 CreateMultipleRootDevices=2 %GPU_RUN_PLACEHOLDER %t.out
-// RUN: env NEOReadDebugKeys=1 CreateMultipleRootDevices=3 %GPU_RUN_PLACEHOLDER %t.out
 //
 // Test for buffer use in a context with multiple devices (all found
 // root-devices)