main/busybox: cleanup xz symlink
xz has been disabled in 7767013f (Revert "main/busybox: enable xz applet", 2020-11-13). Make sure that the symlink is cleaned up as well.
Fixes:
$ xz
xz: applet not foundxz has been disabled in 7767013f (Revert "main/busybox: enable xz applet", 2020-11-13). Make sure that the symlink is cleaned up as well.
Fixes:
$ xz
xz: applet not found