code: def _remove_node(self, node):
          
  
          self.graph.remove_node(node)
          if node.addr in self._nodes:
              del self._nodes[node.addr]
  
          # We wanna remove the function as well
          if node.addr in self.kb.functions:
              del self.kb.functions[node.addr]
  
          if node.addr in self.kb.functions.callgraph:
              self.kb.functions.callgraph.remove_node(node.addr)
docs: Remove a CFGNode from self.graph as well as from the function manager (if it is the beginning of a function)
  
          :param CFGNode node: The CFGNode to remove from the graph.
          :return: None