Daniel 4:14 (ESV)

14 He proclaimed aloud and said thus: ‘Chop down the tree and lop off its branches, strip off its leaves and scatter its fruit. Let the beasts flee from under it and the birds from its branches.

In this dream, the tree is completely defoliated and cut down. This tree of life is not a permanent feature but only temporary as it gets stripped of all its greatness. No longer does anyone come to seek shelter at this tree. People no longer seek their future at this tree. See for further explanation at Daniel 4:23–25.