Code cleanup: remove copy of shader graph for bump, no longer needed.

intern/cycles/render/graph.cpp

@@ -221,28 +221,6 @@ OutputNode *ShaderGraph::output()
 	return (OutputNode*)nodes.front();
 }
 
-ShaderGraph *ShaderGraph::copy()
-{
-	ShaderGraph *newgraph = new ShaderGraph();
-
-	/* copy nodes */
-	ShaderNodeSet nodes_all;
-	foreach(ShaderNode *node, nodes)
-		nodes_all.insert(node);
-
-	ShaderNodeMap nodes_copy;
-	copy_nodes(nodes_all, nodes_copy);
-
-	/* add nodes (in same order, so output is still first) */
-	newgraph->clear_nodes();
-	foreach(ShaderNode *node, nodes)
-		newgraph->add(nodes_copy[node]);
-
-	newgraph->simplified = simplified;
-
-	return newgraph;
-}
-
 void ShaderGraph::connect(ShaderOutput *from, ShaderInput *to)
 {
 	assert(!finalized);