configtree: T5316: use single-pass to drop trim function

python/vyos/configtree.py

@@ -418,10 +418,6 @@ def __init__(self, left, right, path=[], libpath=LIBPATH):
         self.__diff_tree.argtypes = [c_char_p, c_void_p, c_void_p]
         self.__diff_tree.restype = c_void_p
 
-        self.__trim_tree = self.__lib.trim_tree
-        self.__trim_tree.argtypes = [c_void_p, c_void_p]
-        self.__trim_tree.restype = c_void_p
-
         check_path(path)
         path_str = " ".join(map(str, path)).encode()
 
@@ -435,11 +431,7 @@ def __init__(self, left, right, path=[], libpath=LIBPATH):
         self.add = self.full.get_subtree(['add'])
         self.sub = self.full.get_subtree(['sub'])
         self.inter = self.full.get_subtree(['inter'])
-
-        # trim sub(-tract) tree to get delete tree for commands
-        ref = self.right.get_subtree(path, with_node=True) if path else self.right
-        res = self.__trim_tree(self.sub._get_config(), ref._get_config())
-        self.delete = ConfigTree(address=res)
+        self.delete = self.full.get_subtree(['del'])
 
     def to_commands(self):
         add = self.add.to_commands()