Revert "[SYCL] Enable parallel indexers for AMD, after adding global offset (intel/llvm-test-suite#934)" (intel/llvm-test-suite#940)

This reverts commit 41cf2ae.

Author: vladimirlaz

SYCL/Basic/parallel_for_indexers.cpp

@@ -5,6 +5,9 @@
 // RUN: %CPU_RUN_PLACEHOLDER %t2.out
 // RUN: %GPU_RUN_PLACEHOLDER %t2.out
 // RUN: %ACC_RUN_PLACEHOLDER %t2.out
+//
+// Incorrect results with hip on AMD
+// XFAIL: hip_amd
 
 #include <CL/sycl.hpp>