Fixed some new warnings

src/core/include/ngraph/factory.hpp

@@ -40,6 +40,8 @@ public:
         };
     }
 
+    ~FactoryRegistry() = default;
+
     /// \brief Register a custom factory for type_info
     void register_factory(const typename BASE_TYPE::type_info_t& type_info, Factory factory) {
         std::lock_guard<std::mutex> guard(get_registry_mutex());

src/core/include/ngraph/op/util/slice_plan.hpp

@@ -19,6 +19,7 @@
 #include "ngraph/axis_set.hpp"
 #include "ngraph/shape.hpp"
 
+NGRAPH_SUPPRESS_DEPRECATED_START
 namespace ngraph {
 //
 // In various places, like ConstantFolding, it is
@@ -66,3 +67,4 @@ NGRAPH_API_DEPRECATED SlicePlan NGRAPH_API make_slice_plan(const Shape& input_sh
 }  // namespace ngraph
 
 using ngraph::make_slice_plan;
+NGRAPH_SUPPRESS_DEPRECATED_END

src/core/include/ngraph/util.hpp

@@ -51,6 +51,7 @@ namespace runtime {
 class Tensor;
 }  // namespace runtime
 
+NGRAPH_SUPPRESS_DEPRECATED_START
 template <typename T>
 NGRAPH_API_DEPRECATED std::string join(const T& v, const std::string& sep = ", ") {
     std::ostringstream ss;
@@ -351,3 +352,4 @@ std::vector<int64_t> NGRAPH_API read_index_vector(std::shared_ptr<ngraph::runtim
 NGRAPH_API
 NGRAPH_API_DEPRECATED
 std::ostream& operator<<(std::ostream& os, const ngraph::NodeVector& nv);
+NGRAPH_SUPPRESS_DEPRECATED_END