On click of parent node in tree layout, Like link and node, linkText should also exit

[Ram shaw]

On click of parent node in tree layout, link and linktext should exit. Link is exiting but not the linktext. Here is the jsfiddle link - https://jsfiddle.net/44nd20gk/ . I tried the code - svg.selectAll(".line-label").remove(); which was deleting the linkText from all the labels that should not happen. What i am expecting is on click of node it exits the linkText like link, node and node text from the current branch of the tree.