Merge pull request opencv#17536 from ilya-lavrenov:remove-error-listener

Author: alalek

modules/dnn/src/ie_ngraph.cpp

@@ -239,7 +239,9 @@ class InfEngineNgraphCustomLayerFactory : public InferenceEngine::ILayerImplFact
 class InfEngineNgraphExtension : public InferenceEngine::IExtension
 {
 public:
+#if INF_ENGINE_VER_MAJOR_LT(INF_ENGINE_RELEASE_2020_2)
     virtual void SetLogCallback(InferenceEngine::IErrorListener&) noexcept {}
+#endif
     virtual void Unload() noexcept {}
     virtual void Release() noexcept {}
     virtual void GetVersion(const InferenceEngine::Version*&) const noexcept {}

modules/dnn/src/op_inf_engine.hpp

@@ -226,7 +226,9 @@ class InfEngineBackendLayer : public Layer
 class InfEngineExtension : public InferenceEngine::IExtension
 {
 public:
+#if INF_ENGINE_VER_MAJOR_LT(INF_ENGINE_RELEASE_2020_2)
     virtual void SetLogCallback(InferenceEngine::IErrorListener&) noexcept {}
+#endif
     virtual void Unload() noexcept {}
     virtual void Release() noexcept {}
     virtual void GetVersion(const InferenceEngine::Version*&) const noexcept {}