Shaders: add target setting to material output node.

This makes it possible to have a single shading nodetree that contains
separate Cycles and Eevee shaders. By default the target is set to All
so shaders are shared.

release/scripts/modules/bpy_extras/node_utils.py

@@ -20,7 +20,6 @@
 
 __all__ = (
     "find_node_input",
-    "find_output_node",
 )
 
 
@@ -31,22 +30,3 @@ def find_node_input(node, name):
             return input
 
     return None
-
-# Return the output node to display in the UI. In case multiple node types are
-# specified, node types earlier in the list get priority.
-
-
-def find_output_node(ntree, nodetypes):
-    if ntree:
-        output_node = None
-        for nodetype in nodetypes:
-            for node in ntree.nodes:
-                if getattr(node, "type", None) == nodetype:
-                    if getattr(node, "is_active_output", True):
-                        return node
-                    if not output_node:
-                        output_node = node
-            if output_node:
-                return output_node
-
-    return None