[ue4] Remove dependency on RHI, RenderCore, and ShaderCore. Still doesn't work with UE 4.22 as symbol names generator in UBT seems broken. Linker can't find editor plugin symbols.

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/SpinePlugin.Build.cs

@@ -15,7 +15,7 @@ namespace UnrealBuildTool.Rules
 			PrivateIncludePaths.Add(Path.Combine(ModuleDirectory, "Private"));
 			PrivateIncludePaths.Add(Path.Combine(ModuleDirectory, "Public/spine-cpp/include"));
 
-            PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "RHI", "RenderCore", "ShaderCore", "ProceduralMeshComponent", "UMG", "Slate", "SlateCore" });
+            PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "ProceduralMeshComponent", "UMG", "Slate", "SlateCore" });
 			PublicDefinitions.Add("SPINE_UE4");
 		}
 	}