Remove "cl" prefixes

Author: aelovikov-intel

SYCL/USM/allocator_rebind.cpp

@@ -12,9 +12,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include <CL/sycl.hpp>
+#include <sycl.hpp>
 
-using namespace cl::sycl;
+using namespace sycl;
 
 // Allocator has a minimum internal alignment of 64, so use higher values for
 // the purpose of this test.