Removed unused files (#12872)

docs/snippets/HETERO0.cpp

@@ -1,14 +0,0 @@
-#include <ie_core.hpp>
-#include <ngraph/function.hpp>
-#include <ngraph/variant.hpp>
-
-int main() {
-InferenceEngine::Core core;
-auto network = core.ReadNetwork("sample.xml");
-auto function = network.getFunction();
-//! [part0]
-for (auto && op : function->get_ops())
-    op->get_rt_info()["affinity"] = "CPU";
-//! [part0]
-return 0;
-}

docs/snippets/HETERO1.cpp

@@ -1,34 +0,0 @@
-#include <ie_core.hpp>
-#include <ngraph/function.hpp>
-#include <ngraph/variant.hpp>
-
-int main() {
-using namespace InferenceEngine;
-using namespace ngraph;
-//! [part1]
-InferenceEngine::Core core;
-auto network = core.ReadNetwork("sample.xml");
-auto function = network.getFunction();
-
-// This example demonstrates how to perform default affinity initialization and then
-// correct affinity manually for some layers
-const std::string device = "HETERO:GPU,CPU";
-
-// QueryNetworkResult object contains map layer -> device
-InferenceEngine::QueryNetworkResult res = core.QueryNetwork(network, device, { });
-
-// update default affinities
-res.supportedLayersMap["layerName"] = "CPU";
-
-// set affinities to network
-for (auto&& node : function->get_ops()) {
-    auto& affinity = res.supportedLayersMap[node->get_friendly_name()];
-    // Store affinity mapping using node runtime information
-    node->get_rt_info()["affinity"] = affinity;
-}
-
-// load network with affinities set before
-auto executable_network = core.LoadNetwork(network, device);
-//! [part1]
-return 0;
-}

docs/snippets/HETERO2.cpp

@@ -1,11 +0,0 @@
-#include <ie_core.hpp>
-
-int main() {
-using namespace InferenceEngine;
-//! [part2]
-InferenceEngine::Core core;
-auto network = core.ReadNetwork("sample.xml");
-auto executable_network = core.LoadNetwork(network, "HETERO:GPU,CPU");
-//! [part2]
-return 0;
-}

docs/snippets/HETERO3.cpp

@@ -1,14 +0,0 @@
-#include <ie_core.hpp>
-
-int main() {
-using namespace InferenceEngine;
-//! [part3]
-using namespace InferenceEngine::PluginConfigParams;
-using namespace InferenceEngine::HeteroConfigParams;
-
-// ...
-InferenceEngine::Core core;
-core.SetConfig({ { KEY_HETERO_DUMP_GRAPH_DOT, YES } }, "HETERO");
-//! [part3]
-return 0;
-}