dnn(test): re-enable ONNX split tests for OpenVINO

modules/dnn/test/test_onnx_conformance_layer_filter__openvino.inl.hpp

@@ -1697,26 +1697,11 @@ CASE(test_spacetodepth)
 CASE(test_spacetodepth_example)
     // no filter
 CASE(test_split_equal_parts_1d)
-#if INF_ENGINE_VER_MAJOR_EQ(2021040000)
+    // no filter
-    SKIP_CPU;
-    // MYRIAD is ok
-    SKIP_OPENCL;
-    SKIP_OPENCL_FP16;
-#endif
 CASE(test_split_equal_parts_2d)
-#if INF_ENGINE_VER_MAJOR_EQ(2021040000)
+    // no filter
-    SKIP_CPU;
-    // MYRIAD is ok
-    SKIP_OPENCL;
-    SKIP_OPENCL_FP16;
-#endif
 CASE(test_split_equal_parts_default_axis)
-#if INF_ENGINE_VER_MAJOR_EQ(2021040000)
+    // no filter
-    SKIP_CPU;
-    // MYRIAD is ok
-    SKIP_OPENCL;
-    SKIP_OPENCL_FP16;
-#endif
 CASE(test_split_variable_parts_1d)
     // no filter
 CASE(test_split_variable_parts_2d)