[SYCL][ESIMD] Remove unnecessary namespace using directive

Signed-off-by: Kochetkov, Yuriy <[email protected]>

Author: yuriykoch

SYCL/ESIMD/api/functional/ctors/ctor_move.cpp

@@ -30,7 +30,6 @@
 #include <cassert>
 
 using namespace sycl::ext::intel::experimental::esimd;
-using namespace esimd_test::api::functional::ctors;
 using namespace esimd_test::api::functional;
 
 // Uses the initializer C++ context to call simd move constructor
@@ -94,7 +93,7 @@ class const_ref {
 // Runs a TestCaseT, specific for each C++ context, for a simd<DataT,NumElems>
 // instance
 template <typename DataT, int NumElems, typename TestCaseT> class run_test {
-  using KernelName = Kernel<DataT, NumElems, TestCaseT>;
+  using KernelName = ctors::Kernel<DataT, NumElems, TestCaseT>;
 
 public:
   bool operator()(sycl::queue &queue, const std::string &data_type) {