Lots of refactoring

Plugins/BlueprintMCP/Source/BlueprintMCP/Handlers/GraphNode_Delete.h

@@ -4,6 +4,7 @@
 #include "MCPHandler.h"
 #include "MCPFetcher.h"
 #include "MCPUtils.h"
+#include "MCPServer.h"
 #include "EdGraph/EdGraph.h"
 #include "EdGraph/EdGraphNode.h"
 #include "MaterialGraph/MaterialGraphNode.h"
@@ -43,10 +44,9 @@ public:
 
 		if (!FoundNode->CanUserDeleteNode())
 		{
-			MCPErrorCallback Error(Result);
-			return Error.SetError(FString::Printf(
-				TEXT("Cannot delete node '%s' in graph '%s' — it is not deletable."),
-				*NodeTitle, *GraphName));
+			UMCPServer::Printf(TEXT("ERROR: Cannot delete node '%s' in graph '%s' — it is not deletable.\n"),
+				*NodeTitle, *GraphName);
+			return;
 		}
 
 		if (Cast<UMaterialGraphNode>(FoundNode))