People keep bringing this link up every time, but obscure the actual reason that was done: it puts the developers depending on the library in legal jeopardy. Licenses like "Do Whatever The Fuck You Want To" [0] are in the same boat.

Redhat also stopped including JSMin for the same reason. [1]

[0] https://en.wikipedia.org/wiki/WTFPL

[1] https://bugzilla.redhat.com/show_bug.cgi?id=455507